Home / 687,188.07-1,025,202.32-649,987.20

Finding the Fourth Proportional to 687,188.07, 1,025,202.32 and 649,987.20

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Solution

The fourth proportional to 687,188.07, 1,025,202.32 and 649,987.20 is: 969,703.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,188.07 : 1,025,202.32 = 649,987.20 : x
  2. Step 2: Convert to fraction form
    687,188.07/1,025,202.32 = 649,987.20/x
  3. Step 3: Cross multiply
    687,188.07x = 1,025,202.32 × 649,987.20
  4. Step 4: Simplify right side
    687,188.07x = 666,368,382,160.37
  5. Step 5: Solve for x
    x = 666,368,382,160.37/687,188.07
  6. Step 6: Final answer
    x = 969,703.07

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1.5x scale

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.