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Finding the Fourth Proportional to 979,342,275.20, 1,469,013,412.80 and 979,342,275.20

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Solution

The fourth proportional to 979,342,275.20, 1,469,013,412.80 and 979,342,275.20 is: 1,469,013,412.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,342,275.20 : 1,469,013,412.80 = 979,342,275.20 : x
  2. Step 2: Convert to fraction form
    979,342,275.20/1,469,013,412.80 = 979,342,275.20/x
  3. Step 3: Cross multiply
    979,342,275.20x = 1,469,013,412.80 × 979,342,275.20
  4. Step 4: Simplify right side
    979,342,275.20x = 1,438,666,937,990,868,736
  5. Step 5: Solve for x
    x = 1,438,666,937,990,868,736/979,342,275.20
  6. Step 6: Final answer
    x = 1,469,013,412.80

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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.