Home / 515,619,456.91-711,572,037.89-289,598,270.83

Finding the Fourth Proportional to 515,619,456.91, 711,572,037.89 and 289,598,270.83

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Solution

The fourth proportional to 515,619,456.91, 711,572,037.89 and 289,598,270.83 is: 399,655,267.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,619,456.91 : 711,572,037.89 = 289,598,270.83 : x
  2. Step 2: Convert to fraction form
    515,619,456.91/711,572,037.89 = 289,598,270.83/x
  3. Step 3: Cross multiply
    515,619,456.91x = 711,572,037.89 × 289,598,270.83
  4. Step 4: Simplify right side
    515,619,456.91x = 206,070,031,742,475,232
  5. Step 5: Solve for x
    x = 206,070,031,742,475,232/515,619,456.91
  6. Step 6: Final answer
    x = 399,655,267.04

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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.