Home / 787,287.20-1,180,930.80-726,461.60

Finding the Fourth Proportional to 787,287.20, 1,180,930.80 and 726,461.60

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Solution

The fourth proportional to 787,287.20, 1,180,930.80 and 726,461.60 is: 1,089,692.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,287.20 : 1,180,930.80 = 726,461.60 : x
  2. Step 2: Convert to fraction form
    787,287.20/1,180,930.80 = 726,461.60/x
  3. Step 3: Cross multiply
    787,287.20x = 1,180,930.80 × 726,461.60
  4. Step 4: Simplify right side
    787,287.20x = 857,900,878,457.28
  5. Step 5: Solve for x
    x = 857,900,878,457.28/787,287.20
  6. Step 6: Final answer
    x = 1,089,692.40

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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.