Home / 743,359.20-1,115,038.80-612,139.20

Finding the Fourth Proportional to 743,359.20, 1,115,038.80 and 612,139.20

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Solution

The fourth proportional to 743,359.20, 1,115,038.80 and 612,139.20 is: 918,208.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,359.20 : 1,115,038.80 = 612,139.20 : x
  2. Step 2: Convert to fraction form
    743,359.20/1,115,038.80 = 612,139.20/x
  3. Step 3: Cross multiply
    743,359.20x = 1,115,038.80 × 612,139.20
  4. Step 4: Simplify right side
    743,359.20x = 682,558,959,000.96
  5. Step 5: Solve for x
    x = 682,558,959,000.96/743,359.20
  6. Step 6: Final answer
    x = 918,208.80

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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.