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Finding the Fourth Proportional to 858,512,652.60, 1,287,768,978.90 and 801,117,024.60

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Solution

The fourth proportional to 858,512,652.60, 1,287,768,978.90 and 801,117,024.60 is: 1,201,675,536.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,512,652.60 : 1,287,768,978.90 = 801,117,024.60 : x
  2. Step 2: Convert to fraction form
    858,512,652.60/1,287,768,978.90 = 801,117,024.60/x
  3. Step 3: Cross multiply
    858,512,652.60x = 1,287,768,978.90 × 801,117,024.60
  4. Step 4: Simplify right side
    858,512,652.60x = 1,031,653,652,748,548,352
  5. Step 5: Solve for x
    x = 1,031,653,652,748,548,352/858,512,652.60
  6. Step 6: Final answer
    x = 1,201,675,536.90

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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.