Home / 538,669.17-742,811.13-354,955.68

Finding the Fourth Proportional to 538,669.17, 742,811.13 and 354,955.68

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Solution

The fourth proportional to 538,669.17, 742,811.13 and 354,955.68 is: 489,474.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,669.17 : 742,811.13 = 354,955.68 : x
  2. Step 2: Convert to fraction form
    538,669.17/742,811.13 = 354,955.68/x
  3. Step 3: Cross multiply
    538,669.17x = 742,811.13 × 354,955.68
  4. Step 4: Simplify right side
    538,669.17x = 263,665,029,760.72
  5. Step 5: Solve for x
    x = 263,665,029,760.72/538,669.17
  6. Step 6: Final answer
    x = 489,474.88

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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.