Home / 742,538.53-1,024,703.63-403,006.78

Finding the Fourth Proportional to 742,538.53, 1,024,703.63 and 403,006.78

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Solution

The fourth proportional to 742,538.53, 1,024,703.63 and 403,006.78 is: 556,149.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,538.53 : 1,024,703.63 = 403,006.78 : x
  2. Step 2: Convert to fraction form
    742,538.53/1,024,703.63 = 403,006.78/x
  3. Step 3: Cross multiply
    742,538.53x = 1,024,703.63 × 403,006.78
  4. Step 4: Simplify right side
    742,538.53x = 412,962,510,380.61
  5. Step 5: Solve for x
    x = 412,962,510,380.61/742,538.53
  6. Step 6: Final answer
    x = 556,149.61

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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.