Home / 738,291.20-1,107,436.80-239,655.20

Finding the Fourth Proportional to 738,291.20, 1,107,436.80 and 239,655.20

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Solution

The fourth proportional to 738,291.20, 1,107,436.80 and 239,655.20 is: 359,482.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,291.20 : 1,107,436.80 = 239,655.20 : x
  2. Step 2: Convert to fraction form
    738,291.20/1,107,436.80 = 239,655.20/x
  3. Step 3: Cross multiply
    738,291.20x = 1,107,436.80 × 239,655.20
  4. Step 4: Simplify right side
    738,291.20x = 265,402,987,791.36
  5. Step 5: Solve for x
    x = 265,402,987,791.36/738,291.20
  6. Step 6: Final answer
    x = 359,482.80

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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.