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Finding the Fourth Proportional to 579,874.92, 870,062.64 and 313,823.16

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Solution

The fourth proportional to 579,874.92, 870,062.64 and 313,823.16 is: 470,870.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,874.92 : 870,062.64 = 313,823.16 : x
  2. Step 2: Convert to fraction form
    579,874.92/870,062.64 = 313,823.16/x
  3. Step 3: Cross multiply
    579,874.92x = 870,062.64 × 313,823.16
  4. Step 4: Simplify right side
    579,874.92x = 273,045,807,082.74
  5. Step 5: Solve for x
    x = 273,045,807,082.74/579,874.92
  6. Step 6: Final answer
    x = 470,870.18

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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.