Home / 738,266.40-1,107,399.60-612,295.20

Finding the Fourth Proportional to 738,266.40, 1,107,399.60 and 612,295.20

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Solution

The fourth proportional to 738,266.40, 1,107,399.60 and 612,295.20 is: 918,442.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,266.40 : 1,107,399.60 = 612,295.20 : x
  2. Step 2: Convert to fraction form
    738,266.40/1,107,399.60 = 612,295.20/x
  3. Step 3: Cross multiply
    738,266.40x = 1,107,399.60 × 612,295.20
  4. Step 4: Simplify right side
    738,266.40x = 678,055,459,561.92
  5. Step 5: Solve for x
    x = 678,055,459,561.92/738,266.40
  6. Step 6: Final answer
    x = 918,442.80

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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.