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Finding the Fourth Proportional to 1,319,978,233.80, 1,979,967,350.70 and 707,758,201.80

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Solution

The fourth proportional to 1,319,978,233.80, 1,979,967,350.70 and 707,758,201.80 is: 1,061,637,302.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,978,233.80 : 1,979,967,350.70 = 707,758,201.80 : x
  2. Step 2: Convert to fraction form
    1,319,978,233.80/1,979,967,350.70 = 707,758,201.80/x
  3. Step 3: Cross multiply
    1,319,978,233.80x = 1,979,967,350.70 × 707,758,201.80
  4. Step 4: Simplify right side
    1,319,978,233.80x = 1,401,338,131,754,141,952
  5. Step 5: Solve for x
    x = 1,401,338,131,754,141,952/1,319,978,233.80
  6. Step 6: Final answer
    x = 1,061,637,302.70

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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.