Home / 1,285,488,238.59-1,773,993,206.16-721,098,228.15

Finding the Fourth Proportional to 1,285,488,238.59, 1,773,993,206.16 and 721,098,228.15

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Solution

The fourth proportional to 1,285,488,238.59, 1,773,993,206.16 and 721,098,228.15 is: 995,126,458.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,488,238.59 : 1,773,993,206.16 = 721,098,228.15 : x
  2. Step 2: Convert to fraction form
    1,285,488,238.59/1,773,993,206.16 = 721,098,228.15/x
  3. Step 3: Cross multiply
    1,285,488,238.59x = 1,773,993,206.16 × 721,098,228.15
  4. Step 4: Simplify right side
    1,285,488,238.59x = 1,279,223,357,712,113,664
  5. Step 5: Solve for x
    x = 1,279,223,357,712,113,664/1,285,488,238.59
  6. Step 6: Final answer
    x = 995,126,458.03

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Double scale
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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.