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Finding the Fourth Proportional to 917,394.40, 1,375,216.80 and 714,878.20

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Solution

The fourth proportional to 917,394.40, 1,375,216.80 and 714,878.20 is: 1,071,635.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,394.40 : 1,375,216.80 = 714,878.20 : x
  2. Step 2: Convert to fraction form
    917,394.40/1,375,216.80 = 714,878.20/x
  3. Step 3: Cross multiply
    917,394.40x = 1,375,216.80 × 714,878.20
  4. Step 4: Simplify right side
    917,394.40x = 983,112,510,593.76
  5. Step 5: Solve for x
    x = 983,112,510,593.76/917,394.40
  6. Step 6: Final answer
    x = 1,071,635.61

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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.