Home / 515,609,328.78-773,406,415.17-127,432,192.50

Finding the Fourth Proportional to 515,609,328.78, 773,406,415.17 and 127,432,192.50

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Solution

The fourth proportional to 515,609,328.78, 773,406,415.17 and 127,432,192.50 is: 191,146,415.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,609,328.78 : 773,406,415.17 = 127,432,192.50 : x
  2. Step 2: Convert to fraction form
    515,609,328.78/773,406,415.17 = 127,432,192.50/x
  3. Step 3: Cross multiply
    515,609,328.78x = 773,406,415.17 × 127,432,192.50
  4. Step 4: Simplify right side
    515,609,328.78x = 98,556,875,178,678,352
  5. Step 5: Solve for x
    x = 98,556,875,178,678,352/515,609,328.78
  6. Step 6: Final answer
    x = 191,146,415.86

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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.