Home / 711,444.03-982,123.62-420,964.26

Finding the Fourth Proportional to 711,444.03, 982,123.62 and 420,964.26

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Solution

The fourth proportional to 711,444.03, 982,123.62 and 420,964.26 is: 581,126.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,444.03 : 982,123.62 = 420,964.26 : x
  2. Step 2: Convert to fraction form
    711,444.03/982,123.62 = 420,964.26/x
  3. Step 3: Cross multiply
    711,444.03x = 982,123.62 × 420,964.26
  4. Step 4: Simplify right side
    711,444.03x = 413,438,942,921.82
  5. Step 5: Solve for x
    x = 413,438,942,921.82/711,444.03
  6. Step 6: Final answer
    x = 581,126.45

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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.