Home / 742,419.28-1,024,539.26-402,887.53

Finding the Fourth Proportional to 742,419.28, 1,024,539.26 and 402,887.53

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Solution

The fourth proportional to 742,419.28, 1,024,539.26 and 402,887.53 is: 555,985.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,419.28 : 1,024,539.26 = 402,887.53 : x
  2. Step 2: Convert to fraction form
    742,419.28/1,024,539.26 = 402,887.53/x
  3. Step 3: Cross multiply
    742,419.28x = 1,024,539.26 × 402,887.53
  4. Step 4: Simplify right side
    742,419.28x = 412,774,092,856.65
  5. Step 5: Solve for x
    x = 412,774,092,856.65/742,419.28
  6. Step 6: Final answer
    x = 555,985.15

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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.