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Finding the Fourth Proportional to 579,966.72, 870,586.40 and 460,789.68

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Solution

The fourth proportional to 579,966.72, 870,586.40 and 460,789.68 is: 691,690.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,966.72 : 870,586.40 = 460,789.68 : x
  2. Step 2: Convert to fraction form
    579,966.72/870,586.40 = 460,789.68/x
  3. Step 3: Cross multiply
    579,966.72x = 870,586.40 × 460,789.68
  4. Step 4: Simplify right side
    579,966.72x = 401,157,228,668.35
  5. Step 5: Solve for x
    x = 401,157,228,668.35/579,966.72
  6. Step 6: Final answer
    x = 691,690.08

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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.