Home / 689,843,159.34-951,856,192.80-392,468,040.78

Finding the Fourth Proportional to 689,843,159.34, 951,856,192.80 and 392,468,040.78

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Solution

The fourth proportional to 689,843,159.34, 951,856,192.80 and 392,468,040.78 is: 541,533,434.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,843,159.34 : 951,856,192.80 = 392,468,040.78 : x
  2. Step 2: Convert to fraction form
    689,843,159.34/951,856,192.80 = 392,468,040.78/x
  3. Step 3: Cross multiply
    689,843,159.34x = 951,856,192.80 × 392,468,040.78
  4. Step 4: Simplify right side
    689,843,159.34x = 373,573,135,092,525,888
  5. Step 5: Solve for x
    x = 373,573,135,092,525,888/689,843,159.34
  6. Step 6: Final answer
    x = 541,533,434.14

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1.5x scale

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.