Home / 611,821.41-844,312.78-339,914.40

Finding the Fourth Proportional to 611,821.41, 844,312.78 and 339,914.40

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Solution

The fourth proportional to 611,821.41, 844,312.78 and 339,914.40 is: 469,081.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,821.41 : 844,312.78 = 339,914.40 : x
  2. Step 2: Convert to fraction form
    611,821.41/844,312.78 = 339,914.40/x
  3. Step 3: Cross multiply
    611,821.41x = 844,312.78 × 339,914.40
  4. Step 4: Simplify right side
    611,821.41x = 286,994,072,026.03
  5. Step 5: Solve for x
    x = 286,994,072,026.03/611,821.41
  6. Step 6: Final answer
    x = 469,081.45

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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.