Home / 515,609,330.78-773,406,418.16-127,432,194.50

Finding the Fourth Proportional to 515,609,330.78, 773,406,418.16 and 127,432,194.50

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Solution

The fourth proportional to 515,609,330.78, 773,406,418.16 and 127,432,194.50 is: 191,146,418.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,609,330.78 : 773,406,418.16 = 127,432,194.50 : x
  2. Step 2: Convert to fraction form
    515,609,330.78/773,406,418.16 = 127,432,194.50/x
  3. Step 3: Cross multiply
    515,609,330.78x = 773,406,418.16 × 127,432,194.50
  4. Step 4: Simplify right side
    515,609,330.78x = 98,556,877,106,513,440
  5. Step 5: Solve for x
    x = 98,556,877,106,513,440/515,609,330.78
  6. Step 6: Final answer
    x = 191,146,418.85

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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.