Home / 782,403.60-1,173,605.40-221,438.10

Finding the Fourth Proportional to 782,403.60, 1,173,605.40 and 221,438.10

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Solution

The fourth proportional to 782,403.60, 1,173,605.40 and 221,438.10 is: 332,157.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,403.60 : 1,173,605.40 = 221,438.10 : x
  2. Step 2: Convert to fraction form
    782,403.60/1,173,605.40 = 221,438.10/x
  3. Step 3: Cross multiply
    782,403.60x = 1,173,605.40 × 221,438.10
  4. Step 4: Simplify right side
    782,403.60x = 259,880,949,925.74
  5. Step 5: Solve for x
    x = 259,880,949,925.74/782,403.60
  6. Step 6: Final answer
    x = 332,157.15

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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.