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Finding the Fourth Proportional to 616,105.60, 924,907.20 and 391,465.60

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Solution

The fourth proportional to 616,105.60, 924,907.20 and 391,465.60 is: 587,674.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,105.60 : 924,907.20 = 391,465.60 : x
  2. Step 2: Convert to fraction form
    616,105.60/924,907.20 = 391,465.60/x
  3. Step 3: Cross multiply
    616,105.60x = 924,907.20 × 391,465.60
  4. Step 4: Simplify right side
    616,105.60x = 362,069,351,992.32
  5. Step 5: Solve for x
    x = 362,069,351,992.32/616,105.60
  6. Step 6: Final answer
    x = 587,674.18

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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.