Home / 628,911.09-867,886.07-342,425.97

Finding the Fourth Proportional to 628,911.09, 867,886.07 and 342,425.97

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Solution

The fourth proportional to 628,911.09, 867,886.07 and 342,425.97 is: 472,541.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,911.09 : 867,886.07 = 342,425.97 : x
  2. Step 2: Convert to fraction form
    628,911.09/867,886.07 = 342,425.97/x
  3. Step 3: Cross multiply
    628,911.09x = 867,886.07 × 342,425.97
  4. Step 4: Simplify right side
    628,911.09x = 297,186,727,657.11
  5. Step 5: Solve for x
    x = 297,186,727,657.11/628,911.09
  6. Step 6: Final answer
    x = 472,541.72

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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.