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Finding the Fourth Proportional to 702,779.60, 971,470.18 and 627,049.26

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Solution

The fourth proportional to 702,779.60, 971,470.18 and 627,049.26 is: 866,786.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,779.60 : 971,470.18 = 627,049.26 : x
  2. Step 2: Convert to fraction form
    702,779.60/971,470.18 = 627,049.26/x
  3. Step 3: Cross multiply
    702,779.60x = 971,470.18 × 627,049.26
  4. Step 4: Simplify right side
    702,779.60x = 609,159,657,481.07
  5. Step 5: Solve for x
    x = 609,159,657,481.07/702,779.60
  6. Step 6: Final answer
    x = 866,786.20

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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.