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Finding the Fourth Proportional to 710,717.34, 980,790.02 and 388,427.34

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Solution

The fourth proportional to 710,717.34, 980,790.02 and 388,427.34 is: 536,029.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,717.34 : 980,790.02 = 388,427.34 : x
  2. Step 2: Convert to fraction form
    710,717.34/980,790.02 = 388,427.34/x
  3. Step 3: Cross multiply
    710,717.34x = 980,790.02 × 388,427.34
  4. Step 4: Simplify right side
    710,717.34x = 380,965,656,625.01
  5. Step 5: Solve for x
    x = 380,965,656,625.01/710,717.34
  6. Step 6: Final answer
    x = 536,029.78

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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.