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Finding the Fourth Proportional to 564,967.55, 779,660.85 and 306,849.54

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Solution

The fourth proportional to 564,967.55, 779,660.85 and 306,849.54 is: 423,455.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,967.55 : 779,660.85 = 306,849.54 : x
  2. Step 2: Convert to fraction form
    564,967.55/779,660.85 = 306,849.54/x
  3. Step 3: Cross multiply
    564,967.55x = 779,660.85 × 306,849.54
  4. Step 4: Simplify right side
    564,967.55x = 239,238,573,178.51
  5. Step 5: Solve for x
    x = 239,238,573,178.51/564,967.55
  6. Step 6: Final answer
    x = 423,455.43

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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.