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Finding the Fourth Proportional to 585,013.96, 807,373.38 and 355,518.28

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Solution

The fourth proportional to 585,013.96, 807,373.38 and 355,518.28 is: 490,648.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,013.96 : 807,373.38 = 355,518.28 : x
  2. Step 2: Convert to fraction form
    585,013.96/807,373.38 = 355,518.28/x
  3. Step 3: Cross multiply
    585,013.96x = 807,373.38 × 355,518.28
  4. Step 4: Simplify right side
    585,013.96x = 287,035,995,375.39
  5. Step 5: Solve for x
    x = 287,035,995,375.39/585,013.96
  6. Step 6: Final answer
    x = 490,648.11

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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.