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Finding the Fourth Proportional to 986,281.30, 1,479,312.60 and 808,478.20

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Solution

The fourth proportional to 986,281.30, 1,479,312.60 and 808,478.20 is: 1,212,627.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,281.30 : 1,479,312.60 = 808,478.20 : x
  2. Step 2: Convert to fraction form
    986,281.30/1,479,312.60 = 808,478.20/x
  3. Step 3: Cross multiply
    986,281.30x = 1,479,312.60 × 808,478.20
  4. Step 4: Simplify right side
    986,281.30x = 1,195,991,988,085.32
  5. Step 5: Solve for x
    x = 1,195,991,988,085.32/986,281.30
  6. Step 6: Final answer
    x = 1,212,627.66

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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.