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Finding the Fourth Proportional to 1,312,469.04, 1,969,409.39 and 1,264,697.31

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Solution

The fourth proportional to 1,312,469.04, 1,969,409.39 and 1,264,697.31 is: 1,897,726.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,469.04 : 1,969,409.39 = 1,264,697.31 : x
  2. Step 2: Convert to fraction form
    1,312,469.04/1,969,409.39 = 1,264,697.31/x
  3. Step 3: Cross multiply
    1,312,469.04x = 1,969,409.39 × 1,264,697.31
  4. Step 4: Simplify right side
    1,312,469.04x = 2,490,706,745,823.61
  5. Step 5: Solve for x
    x = 2,490,706,745,823.61/1,312,469.04
  6. Step 6: Final answer
    x = 1,897,726.10

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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.