Home / 1,319,930.52-1,979,903.07-478,460.40

Finding the Fourth Proportional to 1,319,930.52, 1,979,903.07 and 478,460.40

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Solution

The fourth proportional to 1,319,930.52, 1,979,903.07 and 478,460.40 is: 717,693.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,930.52 : 1,979,903.07 = 478,460.40 : x
  2. Step 2: Convert to fraction form
    1,319,930.52/1,979,903.07 = 478,460.40/x
  3. Step 3: Cross multiply
    1,319,930.52x = 1,979,903.07 × 478,460.40
  4. Step 4: Simplify right side
    1,319,930.52x = 947,305,214,833.43
  5. Step 5: Solve for x
    x = 947,305,214,833.43/1,319,930.52
  6. Step 6: Final answer
    x = 717,693.24

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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.