Home / 1,192,125,019.12-1,645,186,701-663,522,861.76

Finding the Fourth Proportional to 1,192,125,019.12, 1,645,186,701 and 663,522,861.76

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Solution

The fourth proportional to 1,192,125,019.12, 1,645,186,701 and 663,522,861.76 is: 915,691,702.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,192,125,019.12 : 1,645,186,701 = 663,522,861.76 : x
  2. Step 2: Convert to fraction form
    1,192,125,019.12/1,645,186,701 = 663,522,861.76/x
  3. Step 3: Cross multiply
    1,192,125,019.12x = 1,645,186,701 × 663,522,861.76
  4. Step 4: Simplify right side
    1,192,125,019.12x = 1,091,618,987,977,013,376
  5. Step 5: Solve for x
    x = 1,091,618,987,977,013,376/1,192,125,019.12
  6. Step 6: Final answer
    x = 915,691,702.19

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1.5x scale

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.