Home / 676,987.20-1,015,869.60-256,564.80

Finding the Fourth Proportional to 676,987.20, 1,015,869.60 and 256,564.80

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Solution

The fourth proportional to 676,987.20, 1,015,869.60 and 256,564.80 is: 384,994.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,987.20 : 1,015,869.60 = 256,564.80 : x
  2. Step 2: Convert to fraction form
    676,987.20/1,015,869.60 = 256,564.80/x
  3. Step 3: Cross multiply
    676,987.20x = 1,015,869.60 × 256,564.80
  4. Step 4: Simplify right side
    676,987.20x = 260,636,380,750.08
  5. Step 5: Solve for x
    x = 260,636,380,750.08/676,987.20
  6. Step 6: Final answer
    x = 384,994.55

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1.5x scale

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.