Home / 538,276.17-742,928.69-308,988.46

Finding the Fourth Proportional to 538,276.17, 742,928.69 and 308,988.46

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Solution

The fourth proportional to 538,276.17, 742,928.69 and 308,988.46 is: 426,465.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,276.17 : 742,928.69 = 308,988.46 : x
  2. Step 2: Convert to fraction form
    538,276.17/742,928.69 = 308,988.46/x
  3. Step 3: Cross multiply
    538,276.17x = 742,928.69 × 308,988.46
  4. Step 4: Simplify right side
    538,276.17x = 229,556,386,553.33
  5. Step 5: Solve for x
    x = 229,556,386,553.33/538,276.17
  6. Step 6: Final answer
    x = 426,465.82

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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.