Home / 918,797.24-1,378,590.89-319,431.66

Finding the Fourth Proportional to 918,797.24, 1,378,590.89 and 319,431.66

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Solution

The fourth proportional to 918,797.24, 1,378,590.89 and 319,431.66 is: 479,284.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,797.24 : 1,378,590.89 = 319,431.66 : x
  2. Step 2: Convert to fraction form
    918,797.24/1,378,590.89 = 319,431.66/x
  3. Step 3: Cross multiply
    918,797.24x = 1,378,590.89 × 319,431.66
  4. Step 4: Simplify right side
    918,797.24x = 440,365,574,856.42
  5. Step 5: Solve for x
    x = 440,365,574,856.42/918,797.24
  6. Step 6: Final answer
    x = 479,284.83

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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.