Home / 691,775.20-1,038,100.20-407,465.20

Finding the Fourth Proportional to 691,775.20, 1,038,100.20 and 407,465.20

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Solution

The fourth proportional to 691,775.20, 1,038,100.20 and 407,465.20 is: 611,455.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,775.20 : 1,038,100.20 = 407,465.20 : x
  2. Step 2: Convert to fraction form
    691,775.20/1,038,100.20 = 407,465.20/x
  3. Step 3: Cross multiply
    691,775.20x = 1,038,100.20 × 407,465.20
  4. Step 4: Simplify right side
    691,775.20x = 422,989,705,613.04
  5. Step 5: Solve for x
    x = 422,989,705,613.04/691,775.20
  6. Step 6: Final answer
    x = 611,455.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.