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Finding the Fourth Proportional to 663,065.80, 992,265.90 and 607,078.60

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Solution

The fourth proportional to 663,065.80, 992,265.90 and 607,078.60 is: 908,482.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,065.80 : 992,265.90 = 607,078.60 : x
  2. Step 2: Convert to fraction form
    663,065.80/992,265.90 = 607,078.60/x
  3. Step 3: Cross multiply
    663,065.80x = 992,265.90 × 607,078.60
  4. Step 4: Simplify right side
    663,065.80x = 602,383,393,399.74
  5. Step 5: Solve for x
    x = 602,383,393,399.74/663,065.80
  6. Step 6: Final answer
    x = 908,482.07

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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.