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Finding the Fourth Proportional to 659,424.40, 989,136.60 and 655,487.80

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Solution

The fourth proportional to 659,424.40, 989,136.60 and 655,487.80 is: 983,231.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,424.40 : 989,136.60 = 655,487.80 : x
  2. Step 2: Convert to fraction form
    659,424.40/989,136.60 = 655,487.80/x
  3. Step 3: Cross multiply
    659,424.40x = 989,136.60 × 655,487.80
  4. Step 4: Simplify right side
    659,424.40x = 648,366,973,833.48
  5. Step 5: Solve for x
    x = 648,366,973,833.48/659,424.40
  6. Step 6: Final answer
    x = 983,231.70

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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.