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Finding the Fourth Proportional to 765,009.12, 1,055,751.60 and 425,484

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Solution

The fourth proportional to 765,009.12, 1,055,751.60 and 425,484 is: 587,189.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,009.12 : 1,055,751.60 = 425,484 : x
  2. Step 2: Convert to fraction form
    765,009.12/1,055,751.60 = 425,484/x
  3. Step 3: Cross multiply
    765,009.12x = 1,055,751.60 × 425,484
  4. Step 4: Simplify right side
    765,009.12x = 449,205,413,774.40
  5. Step 5: Solve for x
    x = 449,205,413,774.40/765,009.12
  6. Step 6: Final answer
    x = 587,189.62

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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.