Home / 1,319,712.72-1,979,568.36-478,263.12

Finding the Fourth Proportional to 1,319,712.72, 1,979,568.36 and 478,263.12

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Solution

The fourth proportional to 1,319,712.72, 1,979,568.36 and 478,263.12 is: 717,394.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,712.72 : 1,979,568.36 = 478,263.12 : x
  2. Step 2: Convert to fraction form
    1,319,712.72/1,979,568.36 = 478,263.12/x
  3. Step 3: Cross multiply
    1,319,712.72x = 1,979,568.36 × 478,263.12
  4. Step 4: Simplify right side
    1,319,712.72x = 946,754,540,106.88
  5. Step 5: Solve for x
    x = 946,754,540,106.88/1,319,712.72
  6. Step 6: Final answer
    x = 717,394.42

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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.