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Finding the Fourth Proportional to 724,564.51, 999,901.23 and 402,275.42

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Solution

The fourth proportional to 724,564.51, 999,901.23 and 402,275.42 is: 555,141.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,564.51 : 999,901.23 = 402,275.42 : x
  2. Step 2: Convert to fraction form
    724,564.51/999,901.23 = 402,275.42/x
  3. Step 3: Cross multiply
    724,564.51x = 999,901.23 × 402,275.42
  4. Step 4: Simplify right side
    724,564.51x = 402,235,687,256.77
  5. Step 5: Solve for x
    x = 402,235,687,256.77/724,564.51
  6. Step 6: Final answer
    x = 555,141.30

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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.