Home / 1,078,042.40-1,617,140.40-330,087.20

Finding the Fourth Proportional to 1,078,042.40, 1,617,140.40 and 330,087.20

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Solution

The fourth proportional to 1,078,042.40, 1,617,140.40 and 330,087.20 is: 495,154.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,042.40 : 1,617,140.40 = 330,087.20 : x
  2. Step 2: Convert to fraction form
    1,078,042.40/1,617,140.40 = 330,087.20/x
  3. Step 3: Cross multiply
    1,078,042.40x = 1,617,140.40 × 330,087.20
  4. Step 4: Simplify right side
    1,078,042.40x = 533,797,346,642.88
  5. Step 5: Solve for x
    x = 533,797,346,642.88/1,078,042.40
  6. Step 6: Final answer
    x = 495,154.32

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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.