Home / 724,600.43-999,979.83-402,310.55

Finding the Fourth Proportional to 724,600.43, 999,979.83 and 402,310.55

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Solution

The fourth proportional to 724,600.43, 999,979.83 and 402,310.55 is: 555,205.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,600.43 : 999,979.83 = 402,310.55 : x
  2. Step 2: Convert to fraction form
    724,600.43/999,979.83 = 402,310.55/x
  3. Step 3: Cross multiply
    724,600.43x = 999,979.83 × 402,310.55
  4. Step 4: Simplify right side
    724,600.43x = 402,302,432,271.27
  5. Step 5: Solve for x
    x = 402,302,432,271.27/724,600.43
  6. Step 6: Final answer
    x = 555,205.89

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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.