Home / 1,239,279.40-1,859,178.30-397,916.20

Finding the Fourth Proportional to 1,239,279.40, 1,859,178.30 and 397,916.20

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Solution

The fourth proportional to 1,239,279.40, 1,859,178.30 and 397,916.20 is: 596,957.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239,279.40 : 1,859,178.30 = 397,916.20 : x
  2. Step 2: Convert to fraction form
    1,239,279.40/1,859,178.30 = 397,916.20/x
  3. Step 3: Cross multiply
    1,239,279.40x = 1,859,178.30 × 397,916.20
  4. Step 4: Simplify right side
    1,239,279.40x = 739,797,164,258.46
  5. Step 5: Solve for x
    x = 739,797,164,258.46/1,239,279.40
  6. Step 6: Final answer
    x = 596,957.53

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.