Home / 528,397.25-729,188.21-302,047.61

Finding the Fourth Proportional to 528,397.25, 729,188.21 and 302,047.61

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Solution

The fourth proportional to 528,397.25, 729,188.21 and 302,047.61 is: 416,825.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,397.25 : 729,188.21 = 302,047.61 : x
  2. Step 2: Convert to fraction form
    528,397.25/729,188.21 = 302,047.61/x
  3. Step 3: Cross multiply
    528,397.25x = 729,188.21 × 302,047.61
  4. Step 4: Simplify right side
    528,397.25x = 220,249,554,560.44
  5. Step 5: Solve for x
    x = 220,249,554,560.44/528,397.25
  6. Step 6: Final answer
    x = 416,825.70

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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.