Home / 724,287.96-999,436.32-402,011.64

Finding the Fourth Proportional to 724,287.96, 999,436.32 and 402,011.64

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Solution

The fourth proportional to 724,287.96, 999,436.32 and 402,011.64 is: 554,731.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,287.96 : 999,436.32 = 402,011.64 : x
  2. Step 2: Convert to fraction form
    724,287.96/999,436.32 = 402,011.64/x
  3. Step 3: Cross multiply
    724,287.96x = 999,436.32 × 402,011.64
  4. Step 4: Simplify right side
    724,287.96x = 401,785,034,078.77
  5. Step 5: Solve for x
    x = 401,785,034,078.77/724,287.96
  6. Step 6: Final answer
    x = 554,731.07

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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.