Home / 687,872.13-949,258.08-377,771.19

Finding the Fourth Proportional to 687,872.13, 949,258.08 and 377,771.19

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Solution

The fourth proportional to 687,872.13, 949,258.08 and 377,771.19 is: 521,321.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,872.13 : 949,258.08 = 377,771.19 : x
  2. Step 2: Convert to fraction form
    687,872.13/949,258.08 = 377,771.19/x
  3. Step 3: Cross multiply
    687,872.13x = 949,258.08 × 377,771.19
  4. Step 4: Simplify right side
    687,872.13x = 358,602,354,498.72
  5. Step 5: Solve for x
    x = 358,602,354,498.72/687,872.13
  6. Step 6: Final answer
    x = 521,321.24

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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.