Home / 518,929.20-778,320.90-163,979.10

Finding the Fourth Proportional to 518,929.20, 778,320.90 and 163,979.10

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Solution

The fourth proportional to 518,929.20, 778,320.90 and 163,979.10 is: 245,945.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,929.20 : 778,320.90 = 163,979.10 : x
  2. Step 2: Convert to fraction form
    518,929.20/778,320.90 = 163,979.10/x
  3. Step 3: Cross multiply
    518,929.20x = 778,320.90 × 163,979.10
  4. Step 4: Simplify right side
    518,929.20x = 127,628,360,693.19
  5. Step 5: Solve for x
    x = 127,628,360,693.19/518,929.20
  6. Step 6: Final answer
    x = 245,945.61

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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.