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Finding the Fourth Proportional to 587,460.90, 810,961.61 and 369,989.15

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Solution

The fourth proportional to 587,460.90, 810,961.61 and 369,989.15 is: 510,752.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,460.90 : 810,961.61 = 369,989.15 : x
  2. Step 2: Convert to fraction form
    587,460.90/810,961.61 = 369,989.15/x
  3. Step 3: Cross multiply
    587,460.90x = 810,961.61 × 369,989.15
  4. Step 4: Simplify right side
    587,460.90x = 300,046,993,636.70
  5. Step 5: Solve for x
    x = 300,046,993,636.70/587,460.90
  6. Step 6: Final answer
    x = 510,752.28

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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.