Home / 790,689.38-1,091,146.59-428,105.57

Finding the Fourth Proportional to 790,689.38, 1,091,146.59 and 428,105.57

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Solution

The fourth proportional to 790,689.38, 1,091,146.59 and 428,105.57 is: 590,783.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,689.38 : 1,091,146.59 = 428,105.57 : x
  2. Step 2: Convert to fraction form
    790,689.38/1,091,146.59 = 428,105.57/x
  3. Step 3: Cross multiply
    790,689.38x = 1,091,146.59 × 428,105.57
  4. Step 4: Simplify right side
    790,689.38x = 467,125,927,409.77
  5. Step 5: Solve for x
    x = 467,125,927,409.77/790,689.38
  6. Step 6: Final answer
    x = 590,783.11

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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.