Home / 724,279.18-999,628.97-418,300.57

Finding the Fourth Proportional to 724,279.18, 999,628.97 and 418,300.57

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Solution

The fourth proportional to 724,279.18, 999,628.97 and 418,300.57 is: 577,326.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,279.18 : 999,628.97 = 418,300.57 : x
  2. Step 2: Convert to fraction form
    724,279.18/999,628.97 = 418,300.57/x
  3. Step 3: Cross multiply
    724,279.18x = 999,628.97 × 418,300.57
  4. Step 4: Simplify right side
    724,279.18x = 418,145,360,849.87
  5. Step 5: Solve for x
    x = 418,145,360,849.87/724,279.18
  6. Step 6: Final answer
    x = 577,326.22

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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.