Home / 687,130.11-948,264.89-415,145.46

Finding the Fourth Proportional to 687,130.11, 948,264.89 and 415,145.46

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Solution

The fourth proportional to 687,130.11, 948,264.89 and 415,145.46 is: 572,916.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,130.11 : 948,264.89 = 415,145.46 : x
  2. Step 2: Convert to fraction form
    687,130.11/948,264.89 = 415,145.46/x
  3. Step 3: Cross multiply
    687,130.11x = 948,264.89 × 415,145.46
  4. Step 4: Simplify right side
    687,130.11x = 393,667,859,219.58
  5. Step 5: Solve for x
    x = 393,667,859,219.58/687,130.11
  6. Step 6: Final answer
    x = 572,916.04

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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.