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Finding the Fourth Proportional to 438,117.30, 615,023.10 and 438,117.30

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Solution

The fourth proportional to 438,117.30, 615,023.10 and 438,117.30 is: 615,023.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,117.30 : 615,023.10 = 438,117.30 : x
  2. Step 2: Convert to fraction form
    438,117.30/615,023.10 = 438,117.30/x
  3. Step 3: Cross multiply
    438,117.30x = 615,023.10 × 438,117.30
  4. Step 4: Simplify right side
    438,117.30x = 269,452,260,009.63
  5. Step 5: Solve for x
    x = 269,452,260,009.63/438,117.30
  6. Step 6: Final answer
    x = 615,023.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.