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Finding the Fourth Proportional to 979,896,873.20, 1,469,845,309.80 and 735,008,860.40

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Solution

The fourth proportional to 979,896,873.20, 1,469,845,309.80 and 735,008,860.40 is: 1,102,513,290.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,896,873.20 : 1,469,845,309.80 = 735,008,860.40 : x
  2. Step 2: Convert to fraction form
    979,896,873.20/1,469,845,309.80 = 735,008,860.40/x
  3. Step 3: Cross multiply
    979,896,873.20x = 1,469,845,309.80 × 735,008,860.40
  4. Step 4: Simplify right side
    979,896,873.20x = 1,080,349,326,120,382,848
  5. Step 5: Solve for x
    x = 1,080,349,326,120,382,848/979,896,873.20
  6. Step 6: Final answer
    x = 1,102,513,290.60

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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.