Home / 879,959.68-1,319,944.38-318,979.60

Finding the Fourth Proportional to 879,959.68, 1,319,944.38 and 318,979.60

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Solution

The fourth proportional to 879,959.68, 1,319,944.38 and 318,979.60 is: 478,471.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,959.68 : 1,319,944.38 = 318,979.60 : x
  2. Step 2: Convert to fraction form
    879,959.68/1,319,944.38 = 318,979.60/x
  3. Step 3: Cross multiply
    879,959.68x = 1,319,944.38 × 318,979.60
  4. Step 4: Simplify right side
    879,959.68x = 421,035,330,354.65
  5. Step 5: Solve for x
    x = 421,035,330,354.65/879,959.68
  6. Step 6: Final answer
    x = 478,471.16

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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.