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Finding the Fourth Proportional to 564,885.51, 779,538.99 and 306,760.20

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Solution

The fourth proportional to 564,885.51, 779,538.99 and 306,760.20 is: 423,327.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,885.51 : 779,538.99 = 306,760.20 : x
  2. Step 2: Convert to fraction form
    564,885.51/779,538.99 = 306,760.20/x
  3. Step 3: Cross multiply
    564,885.51x = 779,538.99 × 306,760.20
  4. Step 4: Simplify right side
    564,885.51x = 239,131,536,480.20
  5. Step 5: Solve for x
    x = 239,131,536,480.20/564,885.51
  6. Step 6: Final answer
    x = 423,327.44

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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.