Home / 1,078,103.20-1,617,154.80-319,943.20

Finding the Fourth Proportional to 1,078,103.20, 1,617,154.80 and 319,943.20

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Solution

The fourth proportional to 1,078,103.20, 1,617,154.80 and 319,943.20 is: 479,914.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,103.20 : 1,617,154.80 = 319,943.20 : x
  2. Step 2: Convert to fraction form
    1,078,103.20/1,617,154.80 = 319,943.20/x
  3. Step 3: Cross multiply
    1,078,103.20x = 1,617,154.80 × 319,943.20
  4. Step 4: Simplify right side
    1,078,103.20x = 517,397,681,607.36
  5. Step 5: Solve for x
    x = 517,397,681,607.36/1,078,103.20
  6. Step 6: Final answer
    x = 479,914.80

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Double scale
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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.