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Finding the Fourth Proportional to 615,578.40, 924,145.20 and 331,495.20

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Solution

The fourth proportional to 615,578.40, 924,145.20 and 331,495.20 is: 497,661.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,578.40 : 924,145.20 = 331,495.20 : x
  2. Step 2: Convert to fraction form
    615,578.40/924,145.20 = 331,495.20/x
  3. Step 3: Cross multiply
    615,578.40x = 924,145.20 × 331,495.20
  4. Step 4: Simplify right side
    615,578.40x = 306,349,697,903.04
  5. Step 5: Solve for x
    x = 306,349,697,903.04/615,578.40
  6. Step 6: Final answer
    x = 497,661.55

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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.