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Finding the Fourth Proportional to 1,267,932.12, 1,749,925.71 and 784,652.91

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Solution

The fourth proportional to 1,267,932.12, 1,749,925.71 and 784,652.91 is: 1,082,932.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,267,932.12 : 1,749,925.71 = 784,652.91 : x
  2. Step 2: Convert to fraction form
    1,267,932.12/1,749,925.71 = 784,652.91/x
  3. Step 3: Cross multiply
    1,267,932.12x = 1,749,925.71 × 784,652.91
  4. Step 4: Simplify right side
    1,267,932.12x = 1,373,084,300,635.32
  5. Step 5: Solve for x
    x = 1,373,084,300,635.32/1,267,932.12
  6. Step 6: Final answer
    x = 1,082,932.03

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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.