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Finding the Fourth Proportional to 551,205,689.80, 826,808,534.70 and 547,379,314.60

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Solution

The fourth proportional to 551,205,689.80, 826,808,534.70 and 547,379,314.60 is: 821,068,971.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,205,689.80 : 826,808,534.70 = 547,379,314.60 : x
  2. Step 2: Convert to fraction form
    551,205,689.80/826,808,534.70 = 547,379,314.60/x
  3. Step 3: Cross multiply
    551,205,689.80x = 826,808,534.70 × 547,379,314.60
  4. Step 4: Simplify right side
    551,205,689.80x = 452,577,889,029,516,352
  5. Step 5: Solve for x
    x = 452,577,889,029,516,352/551,205,689.80
  6. Step 6: Final answer
    x = 821,068,971.90

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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.