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Finding the Fourth Proportional to 637,243.28, 879,419.16 and 350,775.44

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Solution

The fourth proportional to 637,243.28, 879,419.16 and 350,775.44 is: 484,083.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,243.28 : 879,419.16 = 350,775.44 : x
  2. Step 2: Convert to fraction form
    637,243.28/879,419.16 = 350,775.44/x
  3. Step 3: Cross multiply
    637,243.28x = 879,419.16 × 350,775.44
  4. Step 4: Simplify right side
    637,243.28x = 308,478,642,793.43
  5. Step 5: Solve for x
    x = 308,478,642,793.43/637,243.28
  6. Step 6: Final answer
    x = 484,083.01

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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.