Home / 687,188.81-1,025,203.43-649,987.94

Finding the Fourth Proportional to 687,188.81, 1,025,203.43 and 649,987.94

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Solution

The fourth proportional to 687,188.81, 1,025,203.43 and 649,987.94 is: 969,704.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,188.81 : 1,025,203.43 = 649,987.94 : x
  2. Step 2: Convert to fraction form
    687,188.81/1,025,203.43 = 649,987.94/x
  3. Step 3: Cross multiply
    687,188.81x = 1,025,203.43 × 649,987.94
  4. Step 4: Simplify right side
    687,188.81x = 666,369,869,734.61
  5. Step 5: Solve for x
    x = 666,369,869,734.61/687,188.81
  6. Step 6: Final answer
    x = 969,704.19

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.