Home / 787,101.60-1,180,652.40-288,400.80

Finding the Fourth Proportional to 787,101.60, 1,180,652.40 and 288,400.80

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Solution

The fourth proportional to 787,101.60, 1,180,652.40 and 288,400.80 is: 432,601.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,101.60 : 1,180,652.40 = 288,400.80 : x
  2. Step 2: Convert to fraction form
    787,101.60/1,180,652.40 = 288,400.80/x
  3. Step 3: Cross multiply
    787,101.60x = 1,180,652.40 × 288,400.80
  4. Step 4: Simplify right side
    787,101.60x = 340,501,096,681.92
  5. Step 5: Solve for x
    x = 340,501,096,681.92/787,101.60
  6. Step 6: Final answer
    x = 432,601.20

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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.