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Finding the Fourth Proportional to 787,320,059.90, 1,180,980,089.85 and 775,840,934.30

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Solution

The fourth proportional to 787,320,059.90, 1,180,980,089.85 and 775,840,934.30 is: 1,163,761,401.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,320,059.90 : 1,180,980,089.85 = 775,840,934.30 : x
  2. Step 2: Convert to fraction form
    787,320,059.90/1,180,980,089.85 = 775,840,934.30/x
  3. Step 3: Cross multiply
    787,320,059.90x = 1,180,980,089.85 × 775,840,934.30
  4. Step 4: Simplify right side
    787,320,059.90x = 916,252,696,298,921,856
  5. Step 5: Solve for x
    x = 916,252,696,298,921,856/787,320,059.90
  6. Step 6: Final answer
    x = 1,163,761,401.45

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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.