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Finding the Fourth Proportional to 970,663,904.20, 1,455,995,856.30 and 388,488,003.40

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Solution

The fourth proportional to 970,663,904.20, 1,455,995,856.30 and 388,488,003.40 is: 582,732,005.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    970,663,904.20 : 1,455,995,856.30 = 388,488,003.40 : x
  2. Step 2: Convert to fraction form
    970,663,904.20/1,455,995,856.30 = 388,488,003.40/x
  3. Step 3: Cross multiply
    970,663,904.20x = 1,455,995,856.30 × 388,488,003.40
  4. Step 4: Simplify right side
    970,663,904.20x = 565,636,923,172,660,288
  5. Step 5: Solve for x
    x = 565,636,923,172,660,288/970,663,904.20
  6. Step 6: Final answer
    x = 582,732,005.10

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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.