Home / 398,947,009.80-598,420,514.70-245,892,001.80

Finding the Fourth Proportional to 398,947,009.80, 598,420,514.70 and 245,892,001.80

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Solution

The fourth proportional to 398,947,009.80, 598,420,514.70 and 245,892,001.80 is: 368,838,002.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,947,009.80 : 598,420,514.70 = 245,892,001.80 : x
  2. Step 2: Convert to fraction form
    398,947,009.80/598,420,514.70 = 245,892,001.80/x
  3. Step 3: Cross multiply
    398,947,009.80x = 598,420,514.70 × 245,892,001.80
  4. Step 4: Simplify right side
    398,947,009.80x = 147,146,818,277,769,344
  5. Step 5: Solve for x
    x = 147,146,818,277,769,344/398,947,009.80
  6. Step 6: Final answer
    x = 368,838,002.70

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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.