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Finding the Fourth Proportional to 710,566.28, 980,569.63 and 388,268.97

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Solution

The fourth proportional to 710,566.28, 980,569.63 and 388,268.97 is: 535,804.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,566.28 : 980,569.63 = 388,268.97 : x
  2. Step 2: Convert to fraction form
    710,566.28/980,569.63 = 388,268.97/x
  3. Step 3: Cross multiply
    710,566.28x = 980,569.63 × 388,268.97
  4. Step 4: Simplify right side
    710,566.28x = 380,724,760,253.38
  5. Step 5: Solve for x
    x = 380,724,760,253.38/710,566.28
  6. Step 6: Final answer
    x = 535,804.71

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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.