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Finding the Fourth Proportional to 710,242.40, 979,891.38 and 404,242.14

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Solution

The fourth proportional to 710,242.40, 979,891.38 and 404,242.14 is: 557,715.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,242.40 : 979,891.38 = 404,242.14 : x
  2. Step 2: Convert to fraction form
    710,242.40/979,891.38 = 404,242.14/x
  3. Step 3: Cross multiply
    710,242.40x = 979,891.38 × 404,242.14
  4. Step 4: Simplify right side
    710,242.40x = 396,113,383,519.30
  5. Step 5: Solve for x
    x = 396,113,383,519.30/710,242.40
  6. Step 6: Final answer
    x = 557,715.77

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1.5x scale

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.