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Finding the Fourth Proportional to 627,246.40, 939,314.40 and 502,830.40

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Solution

The fourth proportional to 627,246.40, 939,314.40 and 502,830.40 is: 752,998.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,246.40 : 939,314.40 = 502,830.40 : x
  2. Step 2: Convert to fraction form
    627,246.40/939,314.40 = 502,830.40/x
  3. Step 3: Cross multiply
    627,246.40x = 939,314.40 × 502,830.40
  4. Step 4: Simplify right side
    627,246.40x = 472,315,835,477.76
  5. Step 5: Solve for x
    x = 472,315,835,477.76/627,246.40
  6. Step 6: Final answer
    x = 752,998.88

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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.