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Finding the Fourth Proportional to 610,932.83, 915,207.21 and 399,931.07

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Solution

The fourth proportional to 610,932.83, 915,207.21 and 399,931.07 is: 599,116.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,932.83 : 915,207.21 = 399,931.07 : x
  2. Step 2: Convert to fraction form
    610,932.83/915,207.21 = 399,931.07/x
  3. Step 3: Cross multiply
    610,932.83x = 915,207.21 × 399,931.07
  4. Step 4: Simplify right side
    610,932.83x = 366,019,798,767.02
  5. Step 5: Solve for x
    x = 366,019,798,767.02/610,932.83
  6. Step 6: Final answer
    x = 599,116.27

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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.