Home / 724,278.75-999,628.36-418,300.13

Finding the Fourth Proportional to 724,278.75, 999,628.36 and 418,300.13

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Solution

The fourth proportional to 724,278.75, 999,628.36 and 418,300.13 is: 577,325.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,278.75 : 999,628.36 = 418,300.13 : x
  2. Step 2: Convert to fraction form
    724,278.75/999,628.36 = 418,300.13/x
  3. Step 3: Cross multiply
    724,278.75x = 999,628.36 × 418,300.13
  4. Step 4: Simplify right side
    724,278.75x = 418,144,672,939.69
  5. Step 5: Solve for x
    x = 418,144,672,939.69/724,278.75
  6. Step 6: Final answer
    x = 577,325.61

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Double scale
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Similar ratio
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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.