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Finding the Fourth Proportional to 628,810.68, 867,871.91 and 370,672.24

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Solution

The fourth proportional to 628,810.68, 867,871.91 and 370,672.24 is: 511,594.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,810.68 : 867,871.91 = 370,672.24 : x
  2. Step 2: Convert to fraction form
    628,810.68/867,871.91 = 370,672.24/x
  3. Step 3: Cross multiply
    628,810.68x = 867,871.91 × 370,672.24
  4. Step 4: Simplify right side
    628,810.68x = 321,696,022,643.13
  5. Step 5: Solve for x
    x = 321,696,022,643.13/628,810.68
  6. Step 6: Final answer
    x = 511,594.40

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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.