Home / 742,520.88-1,024,679.56-402,989.28

Finding the Fourth Proportional to 742,520.88, 1,024,679.56 and 402,989.28

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Solution

The fourth proportional to 742,520.88, 1,024,679.56 and 402,989.28 is: 556,125.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,520.88 : 1,024,679.56 = 402,989.28 : x
  2. Step 2: Convert to fraction form
    742,520.88/1,024,679.56 = 402,989.28/x
  3. Step 3: Cross multiply
    742,520.88x = 1,024,679.56 × 402,989.28
  4. Step 4: Simplify right side
    742,520.88x = 412,934,878,115.12
  5. Step 5: Solve for x
    x = 412,934,878,115.12/742,520.88
  6. Step 6: Final answer
    x = 556,125.61

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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.