Home / 742,165.50-1,024,178.67-402,645.90

Finding the Fourth Proportional to 742,165.50, 1,024,178.67 and 402,645.90

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Solution

The fourth proportional to 742,165.50, 1,024,178.67 and 402,645.90 is: 555,646.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,165.50 : 1,024,178.67 = 402,645.90 : x
  2. Step 2: Convert to fraction form
    742,165.50/1,024,178.67 = 402,645.90/x
  3. Step 3: Cross multiply
    742,165.50x = 1,024,178.67 × 402,645.90
  4. Step 4: Simplify right side
    742,165.50x = 412,381,342,342.95
  5. Step 5: Solve for x
    x = 412,381,342,342.95/742,165.50
  6. Step 6: Final answer
    x = 555,646.07

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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.