Home / 498,118.20-687,411-271,763.70

Finding the Fourth Proportional to 498,118.20, 687,411 and 271,763.70

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Solution

The fourth proportional to 498,118.20, 687,411 and 271,763.70 is: 375,038.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,118.20 : 687,411 = 271,763.70 : x
  2. Step 2: Convert to fraction form
    498,118.20/687,411 = 271,763.70/x
  3. Step 3: Cross multiply
    498,118.20x = 687,411 × 271,763.70
  4. Step 4: Simplify right side
    498,118.20x = 186,813,356,780.70
  5. Step 5: Solve for x
    x = 186,813,356,780.70/498,118.20
  6. Step 6: Final answer
    x = 375,038.21

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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.