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Finding the Fourth Proportional to 615,688.40, 924,115.80 and 379,492.40

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Solution

The fourth proportional to 615,688.40, 924,115.80 and 379,492.40 is: 569,598.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,688.40 : 924,115.80 = 379,492.40 : x
  2. Step 2: Convert to fraction form
    615,688.40/924,115.80 = 379,492.40/x
  3. Step 3: Cross multiply
    615,688.40x = 924,115.80 × 379,492.40
  4. Step 4: Simplify right side
    615,688.40x = 350,694,922,819.92
  5. Step 5: Solve for x
    x = 350,694,922,819.92/615,688.40
  6. Step 6: Final answer
    x = 569,598.07

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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.