Home / 628,812.64-867,980.10-374,158.36

Finding the Fourth Proportional to 628,812.64, 867,980.10 and 374,158.36

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Solution

The fourth proportional to 628,812.64, 867,980.10 and 374,158.36 is: 516,468.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,812.64 : 867,980.10 = 374,158.36 : x
  2. Step 2: Convert to fraction form
    628,812.64/867,980.10 = 374,158.36/x
  3. Step 3: Cross multiply
    628,812.64x = 867,980.10 × 374,158.36
  4. Step 4: Simplify right side
    628,812.64x = 324,762,010,728.64
  5. Step 5: Solve for x
    x = 324,762,010,728.64/628,812.64
  6. Step 6: Final answer
    x = 516,468.64

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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.