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Finding the Fourth Proportional to 630,759.10, 870,366.16 and 355,082.13

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Solution

The fourth proportional to 630,759.10, 870,366.16 and 355,082.13 is: 489,967.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,759.10 : 870,366.16 = 355,082.13 : x
  2. Step 2: Convert to fraction form
    630,759.10/870,366.16 = 355,082.13/x
  3. Step 3: Cross multiply
    630,759.10x = 870,366.16 × 355,082.13
  4. Step 4: Simplify right side
    630,759.10x = 309,051,470,416.57
  5. Step 5: Solve for x
    x = 309,051,470,416.57/630,759.10
  6. Step 6: Final answer
    x = 489,967.52

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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.