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Finding the Fourth Proportional to 824,812.80, 1,138,314.96 and 480,630

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Solution

The fourth proportional to 824,812.80, 1,138,314.96 and 480,630 is: 663,312.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    824,812.80 : 1,138,314.96 = 480,630 : x
  2. Step 2: Convert to fraction form
    824,812.80/1,138,314.96 = 480,630/x
  3. Step 3: Cross multiply
    824,812.80x = 1,138,314.96 × 480,630
  4. Step 4: Simplify right side
    824,812.80x = 547,108,319,224.80
  5. Step 5: Solve for x
    x = 547,108,319,224.80/824,812.80
  6. Step 6: Final answer
    x = 663,312.11

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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.