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Finding the Fourth Proportional to 866,600,834.10, 1,195,808,259.54 and 485,143,757.07

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Solution

The fourth proportional to 866,600,834.10, 1,195,808,259.54 and 485,143,757.07 is: 669,441,903.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,600,834.10 : 1,195,808,259.54 = 485,143,757.07 : x
  2. Step 2: Convert to fraction form
    866,600,834.10/1,195,808,259.54 = 485,143,757.07/x
  3. Step 3: Cross multiply
    866,600,834.10x = 1,195,808,259.54 × 485,143,757.07
  4. Step 4: Simplify right side
    866,600,834.10x = 580,138,911,768,573,184
  5. Step 5: Solve for x
    x = 580,138,911,768,573,184/866,600,834.10
  6. Step 6: Final answer
    x = 669,441,903.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.