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Finding the Fourth Proportional to 724,809.68, 1,000,250.68 and 402,549.84

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Solution

The fourth proportional to 724,809.68, 1,000,250.68 and 402,549.84 is: 555,526.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,809.68 : 1,000,250.68 = 402,549.84 : x
  2. Step 2: Convert to fraction form
    724,809.68/1,000,250.68 = 402,549.84/x
  3. Step 3: Cross multiply
    724,809.68x = 1,000,250.68 × 402,549.84
  4. Step 4: Simplify right side
    724,809.68x = 402,650,751,193.89
  5. Step 5: Solve for x
    x = 402,650,751,193.89/724,809.68
  6. Step 6: Final answer
    x = 555,526.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.