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Finding the Fourth Proportional to 654,547.20, 982,051.20 and 321,900.80

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Solution

The fourth proportional to 654,547.20, 982,051.20 and 321,900.80 is: 482,964.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,547.20 : 982,051.20 = 321,900.80 : x
  2. Step 2: Convert to fraction form
    654,547.20/982,051.20 = 321,900.80/x
  3. Step 3: Cross multiply
    654,547.20x = 982,051.20 × 321,900.80
  4. Step 4: Simplify right side
    654,547.20x = 316,123,066,920.96
  5. Step 5: Solve for x
    x = 316,123,066,920.96/654,547.20
  6. Step 6: Final answer
    x = 482,964.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.