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Finding the Fourth Proportional to 710,604.05, 980,646.42 and 388,327.73

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Solution

The fourth proportional to 710,604.05, 980,646.42 and 388,327.73 is: 535,899.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,604.05 : 980,646.42 = 388,327.73 : x
  2. Step 2: Convert to fraction form
    710,604.05/980,646.42 = 388,327.73/x
  3. Step 3: Cross multiply
    710,604.05x = 980,646.42 × 388,327.73
  4. Step 4: Simplify right side
    710,604.05x = 380,812,193,308.00
  5. Step 5: Solve for x
    x = 380,812,193,308.00/710,604.05
  6. Step 6: Final answer
    x = 535,899.28

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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.