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Finding the Fourth Proportional to 610,605.75, 842,084.48 and 381,184.32

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Solution

The fourth proportional to 610,605.75, 842,084.48 and 381,184.32 is: 525,690.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,605.75 : 842,084.48 = 381,184.32 : x
  2. Step 2: Convert to fraction form
    610,605.75/842,084.48 = 381,184.32/x
  3. Step 3: Cross multiply
    610,605.75x = 842,084.48 × 381,184.32
  4. Step 4: Simplify right side
    610,605.75x = 320,989,404,002.13
  5. Step 5: Solve for x
    x = 320,989,404,002.13/610,605.75
  6. Step 6: Final answer
    x = 525,690.11

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1.5x scale

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.