Home / 787,528.60-1,180,515.30-387,842.20

Finding the Fourth Proportional to 787,528.60, 1,180,515.30 and 387,842.20

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Solution

The fourth proportional to 787,528.60, 1,180,515.30 and 387,842.20 is: 581,380.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,528.60 : 1,180,515.30 = 387,842.20 : x
  2. Step 2: Convert to fraction form
    787,528.60/1,180,515.30 = 387,842.20/x
  3. Step 3: Cross multiply
    787,528.60x = 1,180,515.30 × 387,842.20
  4. Step 4: Simplify right side
    787,528.60x = 457,853,651,085.66
  5. Step 5: Solve for x
    x = 457,853,651,085.66/787,528.60
  6. Step 6: Final answer
    x = 581,380.35

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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.