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Finding the Fourth Proportional to 559,758.96, 772,488.18 and 318,082.50

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Solution

The fourth proportional to 559,758.96, 772,488.18 and 318,082.50 is: 438,965.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,758.96 : 772,488.18 = 318,082.50 : x
  2. Step 2: Convert to fraction form
    559,758.96/772,488.18 = 318,082.50/x
  3. Step 3: Cross multiply
    559,758.96x = 772,488.18 × 318,082.50
  4. Step 4: Simplify right side
    559,758.96x = 245,714,971,514.85
  5. Step 5: Solve for x
    x = 245,714,971,514.85/559,758.96
  6. Step 6: Final answer
    x = 438,965.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.