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Finding the Fourth Proportional to 646,987.20, 970,675.20 and 460,363.20

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Solution

The fourth proportional to 646,987.20, 970,675.20 and 460,363.20 is: 690,683.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,987.20 : 970,675.20 = 460,363.20 : x
  2. Step 2: Convert to fraction form
    646,987.20/970,675.20 = 460,363.20/x
  3. Step 3: Cross multiply
    646,987.20x = 970,675.20 × 460,363.20
  4. Step 4: Simplify right side
    646,987.20x = 446,863,141,232.64
  5. Step 5: Solve for x
    x = 446,863,141,232.64/646,987.20
  6. Step 6: Final answer
    x = 690,683.13

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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.