Home / 724,929.94-1,000,375.45-402,660.57

Finding the Fourth Proportional to 724,929.94, 1,000,375.45 and 402,660.57

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Solution

The fourth proportional to 724,929.94, 1,000,375.45 and 402,660.57 is: 555,656.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,929.94 : 1,000,375.45 = 402,660.57 : x
  2. Step 2: Convert to fraction form
    724,929.94/1,000,375.45 = 402,660.57/x
  3. Step 3: Cross multiply
    724,929.94x = 1,000,375.45 × 402,660.57
  4. Step 4: Simplify right side
    724,929.94x = 402,811,748,911.01
  5. Step 5: Solve for x
    x = 402,811,748,911.01/724,929.94
  6. Step 6: Final answer
    x = 555,656.11

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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.