Home / 1,217,832.47-1,680,612-674,005.76

Finding the Fourth Proportional to 1,217,832.47, 1,680,612 and 674,005.76

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Solution

The fourth proportional to 1,217,832.47, 1,680,612 and 674,005.76 is: 930,129.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,832.47 : 1,680,612 = 674,005.76 : x
  2. Step 2: Convert to fraction form
    1,217,832.47/1,680,612 = 674,005.76/x
  3. Step 3: Cross multiply
    1,217,832.47x = 1,680,612 × 674,005.76
  4. Step 4: Simplify right side
    1,217,832.47x = 1,132,742,168,325.12
  5. Step 5: Solve for x
    x = 1,132,742,168,325.12/1,217,832.47
  6. Step 6: Final answer
    x = 930,129.72

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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.