Home / 642,002.10-963,003.15-310,226.10

Finding the Fourth Proportional to 642,002.10, 963,003.15 and 310,226.10

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Solution

The fourth proportional to 642,002.10, 963,003.15 and 310,226.10 is: 465,339.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,002.10 : 963,003.15 = 310,226.10 : x
  2. Step 2: Convert to fraction form
    642,002.10/963,003.15 = 310,226.10/x
  3. Step 3: Cross multiply
    642,002.10x = 963,003.15 × 310,226.10
  4. Step 4: Simplify right side
    642,002.10x = 298,748,711,512.22
  5. Step 5: Solve for x
    x = 298,748,711,512.22/642,002.10
  6. Step 6: Final answer
    x = 465,339.15

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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.