Home / 628,965.52-867,987.98-342,501.19

Finding the Fourth Proportional to 628,965.52, 867,987.98 and 342,501.19

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Solution

The fourth proportional to 628,965.52, 867,987.98 and 342,501.19 is: 472,660.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,965.52 : 867,987.98 = 342,501.19 : x
  2. Step 2: Convert to fraction form
    628,965.52/867,987.98 = 342,501.19/x
  3. Step 3: Cross multiply
    628,965.52x = 867,987.98 × 342,501.19
  4. Step 4: Simplify right side
    628,965.52x = 297,286,914,343.19
  5. Step 5: Solve for x
    x = 297,286,914,343.19/628,965.52
  6. Step 6: Final answer
    x = 472,660.11

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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.