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Finding the Fourth Proportional to 724,560.71, 999,854.74 and 402,250.05

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Solution

The fourth proportional to 724,560.71, 999,854.74 and 402,250.05 is: 555,083.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,560.71 : 999,854.74 = 402,250.05 : x
  2. Step 2: Convert to fraction form
    724,560.71/999,854.74 = 402,250.05/x
  3. Step 3: Cross multiply
    724,560.71x = 999,854.74 × 402,250.05
  4. Step 4: Simplify right side
    724,560.71x = 402,191,619,157.74
  5. Step 5: Solve for x
    x = 402,191,619,157.74/724,560.71
  6. Step 6: Final answer
    x = 555,083.40

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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.