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Finding the Fourth Proportional to 922,048.12, 1,271,710.92 and 818,790.92

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Solution

The fourth proportional to 922,048.12, 1,271,710.92 and 818,790.92 is: 1,129,296.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,048.12 : 1,271,710.92 = 818,790.92 : x
  2. Step 2: Convert to fraction form
    922,048.12/1,271,710.92 = 818,790.92/x
  3. Step 3: Cross multiply
    922,048.12x = 1,271,710.92 × 818,790.92
  4. Step 4: Simplify right side
    922,048.12x = 1,041,265,354,160.85
  5. Step 5: Solve for x
    x = 1,041,265,354,160.85/922,048.12
  6. Step 6: Final answer
    x = 1,129,296.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.