Home / 641,839.83-885,930.98-415,500.63

Finding the Fourth Proportional to 641,839.83, 885,930.98 and 415,500.63

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Solution

The fourth proportional to 641,839.83, 885,930.98 and 415,500.63 is: 573,515.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,839.83 : 885,930.98 = 415,500.63 : x
  2. Step 2: Convert to fraction form
    641,839.83/885,930.98 = 415,500.63/x
  3. Step 3: Cross multiply
    641,839.83x = 885,930.98 × 415,500.63
  4. Step 4: Simplify right side
    641,839.83x = 368,104,878,249.01
  5. Step 5: Solve for x
    x = 368,104,878,249.01/641,839.83
  6. Step 6: Final answer
    x = 573,515.17

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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.