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Finding the Fourth Proportional to 611,839.50, 844,210.50 and 370,074.78

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Solution

The fourth proportional to 611,839.50, 844,210.50 and 370,074.78 is: 510,625.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,839.50 : 844,210.50 = 370,074.78 : x
  2. Step 2: Convert to fraction form
    611,839.50/844,210.50 = 370,074.78/x
  3. Step 3: Cross multiply
    611,839.50x = 844,210.50 × 370,074.78
  4. Step 4: Simplify right side
    611,839.50x = 312,421,015,061.19
  5. Step 5: Solve for x
    x = 312,421,015,061.19/611,839.50
  6. Step 6: Final answer
    x = 510,625.77

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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.