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Finding the Fourth Proportional to 714,915.49, 986,150.14 and 424,335.60

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Solution

The fourth proportional to 714,915.49, 986,150.14 and 424,335.60 is: 585,325.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,915.49 : 986,150.14 = 424,335.60 : x
  2. Step 2: Convert to fraction form
    714,915.49/986,150.14 = 424,335.60/x
  3. Step 3: Cross multiply
    714,915.49x = 986,150.14 × 424,335.60
  4. Step 4: Simplify right side
    714,915.49x = 418,458,608,601.01
  5. Step 5: Solve for x
    x = 418,458,608,601.01/714,915.49
  6. Step 6: Final answer
    x = 585,325.98

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1.5x scale

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.