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Finding the Fourth Proportional to 710,591.23, 980,618.35 and 388,301.34

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Solution

The fourth proportional to 710,591.23, 980,618.35 and 388,301.34 is: 535,857.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,591.23 : 980,618.35 = 388,301.34 : x
  2. Step 2: Convert to fraction form
    710,591.23/980,618.35 = 388,301.34/x
  3. Step 3: Cross multiply
    710,591.23x = 980,618.35 × 388,301.34
  4. Step 4: Simplify right side
    710,591.23x = 380,775,419,333.59
  5. Step 5: Solve for x
    x = 380,775,419,333.59/710,591.23
  6. Step 6: Final answer
    x = 535,857.19

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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.