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Finding the Fourth Proportional to 642,654.20, 963,325.20 and 376,277.60

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Solution

The fourth proportional to 642,654.20, 963,325.20 and 376,277.60 is: 564,032.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,654.20 : 963,325.20 = 376,277.60 : x
  2. Step 2: Convert to fraction form
    642,654.20/963,325.20 = 376,277.60/x
  3. Step 3: Cross multiply
    642,654.20x = 963,325.20 × 376,277.60
  4. Step 4: Simplify right side
    642,654.20x = 362,477,694,275.52
  5. Step 5: Solve for x
    x = 362,477,694,275.52/642,654.20
  6. Step 6: Final answer
    x = 564,032.25

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1.5x scale

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.