Home / 721,915.32-1,083,119.04-216,488.64

Finding the Fourth Proportional to 721,915.32, 1,083,119.04 and 216,488.64

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Solution

The fourth proportional to 721,915.32, 1,083,119.04 and 216,488.64 is: 324,806.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,915.32 : 1,083,119.04 = 216,488.64 : x
  2. Step 2: Convert to fraction form
    721,915.32/1,083,119.04 = 216,488.64/x
  3. Step 3: Cross multiply
    721,915.32x = 1,083,119.04 × 216,488.64
  4. Step 4: Simplify right side
    721,915.32x = 234,482,967,927.71
  5. Step 5: Solve for x
    x = 234,482,967,927.71/721,915.32
  6. Step 6: Final answer
    x = 324,806.75

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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.