Home / 527,363,145.20-727,694,239.56-289,145,648

Finding the Fourth Proportional to 527,363,145.20, 727,694,239.56 and 289,145,648

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Solution

The fourth proportional to 527,363,145.20, 727,694,239.56 and 289,145,648 is: 398,984,313.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,363,145.20 : 727,694,239.56 = 289,145,648 : x
  2. Step 2: Convert to fraction form
    527,363,145.20/727,694,239.56 = 289,145,648/x
  3. Step 3: Cross multiply
    527,363,145.20x = 727,694,239.56 × 289,145,648
  4. Step 4: Simplify right side
    527,363,145.20x = 210,409,622,443,443,424
  5. Step 5: Solve for x
    x = 210,409,622,443,443,424/527,363,145.20
  6. Step 6: Final answer
    x = 398,984,313.48

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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.