Home / 478,336,407.20-660,104,236.78-258,319,833.20

Finding the Fourth Proportional to 478,336,407.20, 660,104,236.78 and 258,319,833.20

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Solution

The fourth proportional to 478,336,407.20, 660,104,236.78 and 258,319,833.20 is: 356,481,367.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,336,407.20 : 660,104,236.78 = 258,319,833.20 : x
  2. Step 2: Convert to fraction form
    478,336,407.20/660,104,236.78 = 258,319,833.20/x
  3. Step 3: Cross multiply
    478,336,407.20x = 660,104,236.78 × 258,319,833.20
  4. Step 4: Simplify right side
    478,336,407.20x = 170,518,016,335,676,576
  5. Step 5: Solve for x
    x = 170,518,016,335,676,576/478,336,407.20
  6. Step 6: Final answer
    x = 356,481,367.03

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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.