Home / 661,859,381.08-991,497,518.88-515,608,146.28

Finding the Fourth Proportional to 661,859,381.08, 991,497,518.88 and 515,608,146.28

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Solution

The fourth proportional to 661,859,381.08, 991,497,518.88 and 515,608,146.28 is: 772,406,061.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,859,381.08 : 991,497,518.88 = 515,608,146.28 : x
  2. Step 2: Convert to fraction form
    661,859,381.08/991,497,518.88 = 515,608,146.28/x
  3. Step 3: Cross multiply
    661,859,381.08x = 991,497,518.88 × 515,608,146.28
  4. Step 4: Simplify right side
    661,859,381.08x = 511,224,197,750,936,064
  5. Step 5: Solve for x
    x = 511,224,197,750,936,064/661,859,381.08
  6. Step 6: Final answer
    x = 772,406,061.42

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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.