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Finding the Fourth Proportional to 702,000.40, 1,053,000.60 and 691,502.80

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Solution

The fourth proportional to 702,000.40, 1,053,000.60 and 691,502.80 is: 1,037,254.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,000.40 : 1,053,000.60 = 691,502.80 : x
  2. Step 2: Convert to fraction form
    702,000.40/1,053,000.60 = 691,502.80/x
  3. Step 3: Cross multiply
    702,000.40x = 1,053,000.60 × 691,502.80
  4. Step 4: Simplify right side
    702,000.40x = 728,152,863,301.68
  5. Step 5: Solve for x
    x = 728,152,863,301.68/702,000.40
  6. Step 6: Final answer
    x = 1,037,254.20

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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.