Home / 643,250.16-887,104.35-401,555.16

Finding the Fourth Proportional to 643,250.16, 887,104.35 and 401,555.16

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Solution

The fourth proportional to 643,250.16, 887,104.35 and 401,555.16 is: 553,783.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,250.16 : 887,104.35 = 401,555.16 : x
  2. Step 2: Convert to fraction form
    643,250.16/887,104.35 = 401,555.16/x
  3. Step 3: Cross multiply
    643,250.16x = 887,104.35 × 401,555.16
  4. Step 4: Simplify right side
    643,250.16x = 356,221,329,200.95
  5. Step 5: Solve for x
    x = 356,221,329,200.95/643,250.16
  6. Step 6: Final answer
    x = 553,783.51

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Double scale
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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.