Home / 476,428.48-657,422.40-285,436.96

Finding the Fourth Proportional to 476,428.48, 657,422.40 and 285,436.96

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Solution

The fourth proportional to 476,428.48, 657,422.40 and 285,436.96 is: 393,873.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,428.48 : 657,422.40 = 285,436.96 : x
  2. Step 2: Convert to fraction form
    476,428.48/657,422.40 = 285,436.96/x
  3. Step 3: Cross multiply
    476,428.48x = 657,422.40 × 285,436.96
  4. Step 4: Simplify right side
    476,428.48x = 187,652,651,291.90
  5. Step 5: Solve for x
    x = 187,652,651,291.90/476,428.48
  6. Step 6: Final answer
    x = 393,873.71

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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.