Home / 790,779.49-1,091,280.89-428,203.38

Finding the Fourth Proportional to 790,779.49, 1,091,280.89 and 428,203.38

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Solution

The fourth proportional to 790,779.49, 1,091,280.89 and 428,203.38 is: 590,923.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,779.49 : 1,091,280.89 = 428,203.38 : x
  2. Step 2: Convert to fraction form
    790,779.49/1,091,280.89 = 428,203.38/x
  3. Step 3: Cross multiply
    790,779.49x = 1,091,280.89 × 428,203.38
  4. Step 4: Simplify right side
    790,779.49x = 467,290,170,790.22
  5. Step 5: Solve for x
    x = 467,290,170,790.22/790,779.49
  6. Step 6: Final answer
    x = 590,923.49

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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.