Home / 873,690,681.38-1,310,540,921.28-291,423,328.45

Finding the Fourth Proportional to 873,690,681.38, 1,310,540,921.28 and 291,423,328.45

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Solution

The fourth proportional to 873,690,681.38, 1,310,540,921.28 and 291,423,328.45 is: 437,136,626.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,690,681.38 : 1,310,540,921.28 = 291,423,328.45 : x
  2. Step 2: Convert to fraction form
    873,690,681.38/1,310,540,921.28 = 291,423,328.45/x
  3. Step 3: Cross multiply
    873,690,681.38x = 1,310,540,921.28 × 291,423,328.45
  4. Step 4: Simplify right side
    873,690,681.38x = 381,922,197,346,070,656
  5. Step 5: Solve for x
    x = 381,922,197,346,070,656/873,690,681.38
  6. Step 6: Final answer
    x = 437,136,626.83

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Double scale
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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.