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Finding the Fourth Proportional to 662,007.80, 991,043.40 and 662,007.80

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Solution

The fourth proportional to 662,007.80, 991,043.40 and 662,007.80 is: 991,043.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,007.80 : 991,043.40 = 662,007.80 : x
  2. Step 2: Convert to fraction form
    662,007.80/991,043.40 = 662,007.80/x
  3. Step 3: Cross multiply
    662,007.80x = 991,043.40 × 662,007.80
  4. Step 4: Simplify right side
    662,007.80x = 656,078,460,938.52
  5. Step 5: Solve for x
    x = 656,078,460,938.52/662,007.80
  6. Step 6: Final answer
    x = 991,043.40

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1.5x scale

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.