Home / 724,475.48-999,726-402,160.11

Finding the Fourth Proportional to 724,475.48, 999,726 and 402,160.11

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Solution

The fourth proportional to 724,475.48, 999,726 and 402,160.11 is: 554,953.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,475.48 : 999,726 = 402,160.11 : x
  2. Step 2: Convert to fraction form
    724,475.48/999,726 = 402,160.11/x
  3. Step 3: Cross multiply
    724,475.48x = 999,726 × 402,160.11
  4. Step 4: Simplify right side
    724,475.48x = 402,049,918,129.86
  5. Step 5: Solve for x
    x = 402,049,918,129.86/724,475.48
  6. Step 6: Final answer
    x = 554,953.11

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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.