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Finding the Fourth Proportional to 645,386.40, 968,079.60 and 467,056.80

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Solution

The fourth proportional to 645,386.40, 968,079.60 and 467,056.80 is: 700,585.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,386.40 : 968,079.60 = 467,056.80 : x
  2. Step 2: Convert to fraction form
    645,386.40/968,079.60 = 467,056.80/x
  3. Step 3: Cross multiply
    645,386.40x = 968,079.60 × 467,056.80
  4. Step 4: Simplify right side
    645,386.40x = 452,148,160,121.28
  5. Step 5: Solve for x
    x = 452,148,160,121.28/645,386.40
  6. Step 6: Final answer
    x = 700,585.20

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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.