Home / 386,438,811.20-579,490,255.20-127,553,998.40

Finding the Fourth Proportional to 386,438,811.20, 579,490,255.20 and 127,553,998.40

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Solution

The fourth proportional to 386,438,811.20, 579,490,255.20 and 127,553,998.40 is: 191,275,557.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,438,811.20 : 579,490,255.20 = 127,553,998.40 : x
  2. Step 2: Convert to fraction form
    386,438,811.20/579,490,255.20 = 127,553,998.40/x
  3. Step 3: Cross multiply
    386,438,811.20x = 579,490,255.20 × 127,553,998.40
  4. Step 4: Simplify right side
    386,438,811.20x = 73,916,299,084,596,400
  5. Step 5: Solve for x
    x = 73,916,299,084,596,400/386,438,811.20
  6. Step 6: Final answer
    x = 191,275,557.58

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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.