Home / 745,979.20-1,119,114.60-319,514.20

Finding the Fourth Proportional to 745,979.20, 1,119,114.60 and 319,514.20

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Solution

The fourth proportional to 745,979.20, 1,119,114.60 and 319,514.20 is: 479,333.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,979.20 : 1,119,114.60 = 319,514.20 : x
  2. Step 2: Convert to fraction form
    745,979.20/1,119,114.60 = 319,514.20/x
  3. Step 3: Cross multiply
    745,979.20x = 1,119,114.60 × 319,514.20
  4. Step 4: Simplify right side
    745,979.20x = 357,573,006,127.32
  5. Step 5: Solve for x
    x = 357,573,006,127.32/745,979.20
  6. Step 6: Final answer
    x = 479,333.75

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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.