Home / 724,704.90-1,000,117.92-402,420.39

Finding the Fourth Proportional to 724,704.90, 1,000,117.92 and 402,420.39

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Solution

The fourth proportional to 724,704.90, 1,000,117.92 and 402,420.39 is: 555,354.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,704.90 : 1,000,117.92 = 402,420.39 : x
  2. Step 2: Convert to fraction form
    724,704.90/1,000,117.92 = 402,420.39/x
  3. Step 3: Cross multiply
    724,704.90x = 1,000,117.92 × 402,420.39
  4. Step 4: Simplify right side
    724,704.90x = 402,467,843,412.39
  5. Step 5: Solve for x
    x = 402,467,843,412.39/724,704.90
  6. Step 6: Final answer
    x = 555,354.11

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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.