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Finding the Fourth Proportional to 487,730.20, 731,595.30 and 346,012.60

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Solution

The fourth proportional to 487,730.20, 731,595.30 and 346,012.60 is: 519,018.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,730.20 : 731,595.30 = 346,012.60 : x
  2. Step 2: Convert to fraction form
    487,730.20/731,595.30 = 346,012.60/x
  3. Step 3: Cross multiply
    487,730.20x = 731,595.30 × 346,012.60
  4. Step 4: Simplify right side
    487,730.20x = 253,141,191,900.78
  5. Step 5: Solve for x
    x = 253,141,191,900.78/487,730.20
  6. Step 6: Final answer
    x = 519,018.90

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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.