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Finding the Fourth Proportional to 659,512.40, 989,424.58 and 525,084.80

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Solution

The fourth proportional to 659,512.40, 989,424.58 and 525,084.80 is: 787,751.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,512.40 : 989,424.58 = 525,084.80 : x
  2. Step 2: Convert to fraction form
    659,512.40/989,424.58 = 525,084.80/x
  3. Step 3: Cross multiply
    659,512.40x = 989,424.58 × 525,084.80
  4. Step 4: Simplify right side
    659,512.40x = 519,531,807,704.38
  5. Step 5: Solve for x
    x = 519,531,807,704.38/659,512.40
  6. Step 6: Final answer
    x = 787,751.39

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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.