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Finding the Fourth Proportional to 924,807.15, 1,387,210.73 and 259,959.15

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Solution

The fourth proportional to 924,807.15, 1,387,210.73 and 259,959.15 is: 389,938.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    924,807.15 : 1,387,210.73 = 259,959.15 : x
  2. Step 2: Convert to fraction form
    924,807.15/1,387,210.73 = 259,959.15/x
  3. Step 3: Cross multiply
    924,807.15x = 1,387,210.73 × 259,959.15
  4. Step 4: Simplify right side
    924,807.15x = 360,618,120,941.88
  5. Step 5: Solve for x
    x = 360,618,120,941.88/924,807.15
  6. Step 6: Final answer
    x = 389,938.73

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Double scale
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Similar ratio
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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.