Home / 921,470.12-1,382,393.10-522,289.16

Finding the Fourth Proportional to 921,470.12, 1,382,393.10 and 522,289.16

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Solution

The fourth proportional to 921,470.12, 1,382,393.10 and 522,289.16 is: 783,540.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,470.12 : 1,382,393.10 = 522,289.16 : x
  2. Step 2: Convert to fraction form
    921,470.12/1,382,393.10 = 522,289.16/x
  3. Step 3: Cross multiply
    921,470.12x = 1,382,393.10 × 522,289.16
  4. Step 4: Simplify right side
    921,470.12x = 722,008,930,988.80
  5. Step 5: Solve for x
    x = 722,008,930,988.80/921,470.12
  6. Step 6: Final answer
    x = 783,540.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.