Home / 687,627.81-948,941.91-385,821.81

Finding the Fourth Proportional to 687,627.81, 948,941.91 and 385,821.81

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Solution

The fourth proportional to 687,627.81, 948,941.91 and 385,821.81 is: 532,442.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,627.81 : 948,941.91 = 385,821.81 : x
  2. Step 2: Convert to fraction form
    687,627.81/948,941.91 = 385,821.81/x
  3. Step 3: Cross multiply
    687,627.81x = 948,941.91 × 385,821.81
  4. Step 4: Simplify right side
    687,627.81x = 366,122,485,301.06
  5. Step 5: Solve for x
    x = 366,122,485,301.06/687,627.81
  6. Step 6: Final answer
    x = 532,442.81

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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.