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Finding the Fourth Proportional to 895,561.74, 1,235,857.41 and 487,668.42

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Solution

The fourth proportional to 895,561.74, 1,235,857.41 and 487,668.42 is: 672,972.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    895,561.74 : 1,235,857.41 = 487,668.42 : x
  2. Step 2: Convert to fraction form
    895,561.74/1,235,857.41 = 487,668.42/x
  3. Step 3: Cross multiply
    895,561.74x = 1,235,857.41 × 487,668.42
  4. Step 4: Simplify right side
    895,561.74x = 602,688,630,479.99
  5. Step 5: Solve for x
    x = 602,688,630,479.99/895,561.74
  6. Step 6: Final answer
    x = 672,972.73

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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.