Home / 730,459.59-1,008,134.34-420,355.78

Finding the Fourth Proportional to 730,459.59, 1,008,134.34 and 420,355.78

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Solution

The fourth proportional to 730,459.59, 1,008,134.34 and 420,355.78 is: 580,148.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    730,459.59 : 1,008,134.34 = 420,355.78 : x
  2. Step 2: Convert to fraction form
    730,459.59/1,008,134.34 = 420,355.78/x
  3. Step 3: Cross multiply
    730,459.59x = 1,008,134.34 × 420,355.78
  4. Step 4: Simplify right side
    730,459.59x = 423,775,096,835.49
  5. Step 5: Solve for x
    x = 423,775,096,835.49/730,459.59
  6. Step 6: Final answer
    x = 580,148.58

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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.