Home / 790,807.38-1,091,312.20-428,231.21

Finding the Fourth Proportional to 790,807.38, 1,091,312.20 and 428,231.21

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Solution

The fourth proportional to 790,807.38, 1,091,312.20 and 428,231.21 is: 590,958.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,807.38 : 1,091,312.20 = 428,231.21 : x
  2. Step 2: Convert to fraction form
    790,807.38/1,091,312.20 = 428,231.21/x
  3. Step 3: Cross multiply
    790,807.38x = 1,091,312.20 × 428,231.21
  4. Step 4: Simplify right side
    790,807.38x = 467,333,943,893.76
  5. Step 5: Solve for x
    x = 467,333,943,893.76/790,807.38
  6. Step 6: Final answer
    x = 590,958.00

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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.