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Finding the Fourth Proportional to 1,265,511.60, 1,895,502.60 and 982,810.80

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Solution

The fourth proportional to 1,265,511.60, 1,895,502.60 and 982,810.80 is: 1,472,069.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265,511.60 : 1,895,502.60 = 982,810.80 : x
  2. Step 2: Convert to fraction form
    1,265,511.60/1,895,502.60 = 982,810.80/x
  3. Step 3: Cross multiply
    1,265,511.60x = 1,895,502.60 × 982,810.80
  4. Step 4: Simplify right side
    1,265,511.60x = 1,862,920,426,708.08
  5. Step 5: Solve for x
    x = 1,862,920,426,708.08/1,265,511.60
  6. Step 6: Final answer
    x = 1,472,069.02

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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.