Home / 790,969.57-1,091,532.54-428,385.11

Finding the Fourth Proportional to 790,969.57, 1,091,532.54 and 428,385.11

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Solution

The fourth proportional to 790,969.57, 1,091,532.54 and 428,385.11 is: 591,168.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,969.57 : 1,091,532.54 = 428,385.11 : x
  2. Step 2: Convert to fraction form
    790,969.57/1,091,532.54 = 428,385.11/x
  3. Step 3: Cross multiply
    790,969.57x = 1,091,532.54 × 428,385.11
  4. Step 4: Simplify right side
    790,969.57x = 467,596,287,216.48
  5. Step 5: Solve for x
    x = 467,596,287,216.48/790,969.57
  6. Step 6: Final answer
    x = 591,168.49

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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.