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Finding the Fourth Proportional to 669,787.60, 924,290.82 and 383,289.40

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Solution

The fourth proportional to 669,787.60, 924,290.82 and 383,289.40 is: 528,930.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,787.60 : 924,290.82 = 383,289.40 : x
  2. Step 2: Convert to fraction form
    669,787.60/924,290.82 = 383,289.40/x
  3. Step 3: Cross multiply
    669,787.60x = 924,290.82 × 383,289.40
  4. Step 4: Simplify right side
    669,787.60x = 354,270,873,823.31
  5. Step 5: Solve for x
    x = 354,270,873,823.31/669,787.60
  6. Step 6: Final answer
    x = 528,930.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.