Home / 1,478,101,261.86-2,216,869,332.30-442,962,142.79

Finding the Fourth Proportional to 1,478,101,261.86, 2,216,869,332.30 and 442,962,142.79

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Solution

The fourth proportional to 1,478,101,261.86, 2,216,869,332.30 and 442,962,142.79 is: 664,358,535.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,478,101,261.86 : 2,216,869,332.30 = 442,962,142.79 : x
  2. Step 2: Convert to fraction form
    1,478,101,261.86/2,216,869,332.30 = 442,962,142.79/x
  3. Step 3: Cross multiply
    1,478,101,261.86x = 2,216,869,332.30 × 442,962,142.79
  4. Step 4: Simplify right side
    1,478,101,261.86x = 981,989,189,709,960,320
  5. Step 5: Solve for x
    x = 981,989,189,709,960,320/1,478,101,261.86
  6. Step 6: Final answer
    x = 664,358,535.54

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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.