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Finding the Fourth Proportional to 710,839.86, 980,959.02 and 388,551.22

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Solution

The fourth proportional to 710,839.86, 980,959.02 and 388,551.22 is: 536,200.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,839.86 : 980,959.02 = 388,551.22 : x
  2. Step 2: Convert to fraction form
    710,839.86/980,959.02 = 388,551.22/x
  3. Step 3: Cross multiply
    710,839.86x = 980,959.02 × 388,551.22
  4. Step 4: Simplify right side
    710,839.86x = 381,152,823,991.00
  5. Step 5: Solve for x
    x = 381,152,823,991.00/710,839.86
  6. Step 6: Final answer
    x = 536,200.69

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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.