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Finding the Fourth Proportional to 606,959.10, 910,438.65 and 207,612.90

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Solution

The fourth proportional to 606,959.10, 910,438.65 and 207,612.90 is: 311,419.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,959.10 : 910,438.65 = 207,612.90 : x
  2. Step 2: Convert to fraction form
    606,959.10/910,438.65 = 207,612.90/x
  3. Step 3: Cross multiply
    606,959.10x = 910,438.65 × 207,612.90
  4. Step 4: Simplify right side
    606,959.10x = 189,018,808,398.59
  5. Step 5: Solve for x
    x = 189,018,808,398.59/606,959.10
  6. Step 6: Final answer
    x = 311,419.35

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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.