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Finding the Fourth Proportional to 710,461.39, 980,425.28 and 388,164.57

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Solution

The fourth proportional to 710,461.39, 980,425.28 and 388,164.57 is: 535,660.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,461.39 : 980,425.28 = 388,164.57 : x
  2. Step 2: Convert to fraction form
    710,461.39/980,425.28 = 388,164.57/x
  3. Step 3: Cross multiply
    710,461.39x = 980,425.28 × 388,164.57
  4. Step 4: Simplify right side
    710,461.39x = 380,566,357,228.33
  5. Step 5: Solve for x
    x = 380,566,357,228.33/710,461.39
  6. Step 6: Final answer
    x = 535,660.86

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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.