Home / 642,111.78-963,177.08-305,186.81

Finding the Fourth Proportional to 642,111.78, 963,177.08 and 305,186.81

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Solution

The fourth proportional to 642,111.78, 963,177.08 and 305,186.81 is: 457,784.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,111.78 : 963,177.08 = 305,186.81 : x
  2. Step 2: Convert to fraction form
    642,111.78/963,177.08 = 305,186.81/x
  3. Step 3: Cross multiply
    642,111.78x = 963,177.08 × 305,186.81
  4. Step 4: Simplify right side
    642,111.78x = 293,948,943,681.23
  5. Step 5: Solve for x
    x = 293,948,943,681.23/642,111.78
  6. Step 6: Final answer
    x = 457,784.69

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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.