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Finding the Fourth Proportional to 710,471.93, 980,439.80 and 388,175.13

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Solution

The fourth proportional to 710,471.93, 980,439.80 and 388,175.13 is: 535,675.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,471.93 : 980,439.80 = 388,175.13 : x
  2. Step 2: Convert to fraction form
    710,471.93/980,439.80 = 388,175.13/x
  3. Step 3: Cross multiply
    710,471.93x = 980,439.80 × 388,175.13
  4. Step 4: Simplify right side
    710,471.93x = 380,582,344,881.30
  5. Step 5: Solve for x
    x = 380,582,344,881.30/710,471.93
  6. Step 6: Final answer
    x = 535,675.42

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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.