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Finding the Fourth Proportional to 502,419.70, 753,629.55 and 342,987.40

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Solution

The fourth proportional to 502,419.70, 753,629.55 and 342,987.40 is: 514,481.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,419.70 : 753,629.55 = 342,987.40 : x
  2. Step 2: Convert to fraction form
    502,419.70/753,629.55 = 342,987.40/x
  3. Step 3: Cross multiply
    502,419.70x = 753,629.55 × 342,987.40
  4. Step 4: Simplify right side
    502,419.70x = 258,485,439,917.67
  5. Step 5: Solve for x
    x = 258,485,439,917.67/502,419.70
  6. Step 6: Final answer
    x = 514,481.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.