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Finding the Fourth Proportional to 872,165.40, 1,308,291.30 and 452,261.40

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Solution

The fourth proportional to 872,165.40, 1,308,291.30 and 452,261.40 is: 678,414.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,165.40 : 1,308,291.30 = 452,261.40 : x
  2. Step 2: Convert to fraction form
    872,165.40/1,308,291.30 = 452,261.40/x
  3. Step 3: Cross multiply
    872,165.40x = 1,308,291.30 × 452,261.40
  4. Step 4: Simplify right side
    872,165.40x = 591,689,654,945.82
  5. Step 5: Solve for x
    x = 591,689,654,945.82/872,165.40
  6. Step 6: Final answer
    x = 678,414.50

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Double scale
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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.