Home / 718,541.20-1,078,200.60-319,243.60

Finding the Fourth Proportional to 718,541.20, 1,078,200.60 and 319,243.60

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Solution

The fourth proportional to 718,541.20, 1,078,200.60 and 319,243.60 is: 479,038.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,541.20 : 1,078,200.60 = 319,243.60 : x
  2. Step 2: Convert to fraction form
    718,541.20/1,078,200.60 = 319,243.60/x
  3. Step 3: Cross multiply
    718,541.20x = 1,078,200.60 × 319,243.60
  4. Step 4: Simplify right side
    718,541.20x = 344,208,641,066.16
  5. Step 5: Solve for x
    x = 344,208,641,066.16/718,541.20
  6. Step 6: Final answer
    x = 479,038.14

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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.