Home / 821,005,562.90-1,229,791,403.55-384,678,650.90

Finding the Fourth Proportional to 821,005,562.90, 1,229,791,403.55 and 384,678,650.90

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Solution

The fourth proportional to 821,005,562.90, 1,229,791,403.55 and 384,678,650.90 is: 576,213,511.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,005,562.90 : 1,229,791,403.55 = 384,678,650.90 : x
  2. Step 2: Convert to fraction form
    821,005,562.90/1,229,791,403.55 = 384,678,650.90/x
  3. Step 3: Cross multiply
    821,005,562.90x = 1,229,791,403.55 × 384,678,650.90
  4. Step 4: Simplify right side
    821,005,562.90x = 473,074,498,006,031,424
  5. Step 5: Solve for x
    x = 473,074,498,006,031,424/821,005,562.90
  6. Step 6: Final answer
    x = 576,213,511.07

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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.