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Finding the Fourth Proportional to 645,869,010.10, 968,803,515.15 and 645,869,010.10

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Solution

The fourth proportional to 645,869,010.10, 968,803,515.15 and 645,869,010.10 is: 968,803,515.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,869,010.10 : 968,803,515.15 = 645,869,010.10 : x
  2. Step 2: Convert to fraction form
    645,869,010.10/968,803,515.15 = 645,869,010.10/x
  3. Step 3: Cross multiply
    645,869,010.10x = 968,803,515.15 × 645,869,010.10
  4. Step 4: Simplify right side
    645,869,010.10x = 625,720,167,311,330,816
  5. Step 5: Solve for x
    x = 625,720,167,311,330,816/645,869,010.10
  6. Step 6: Final answer
    x = 968,803,515.15

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.