Home / 739,139.10-1,108,708.65-340,558.35

Finding the Fourth Proportional to 739,139.10, 1,108,708.65 and 340,558.35

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Solution

The fourth proportional to 739,139.10, 1,108,708.65 and 340,558.35 is: 510,837.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,139.10 : 1,108,708.65 = 340,558.35 : x
  2. Step 2: Convert to fraction form
    739,139.10/1,108,708.65 = 340,558.35/x
  3. Step 3: Cross multiply
    739,139.10x = 1,108,708.65 × 340,558.35
  4. Step 4: Simplify right side
    739,139.10x = 377,579,988,474.73
  5. Step 5: Solve for x
    x = 377,579,988,474.73/739,139.10
  6. Step 6: Final answer
    x = 510,837.53

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Double scale
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Similar ratio
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1.5x scale

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.