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Finding the Fourth Proportional to 564,784.89, 779,403.06 and 306,660.57

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Solution

The fourth proportional to 564,784.89, 779,403.06 and 306,660.57 is: 423,191.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,784.89 : 779,403.06 = 306,660.57 : x
  2. Step 2: Convert to fraction form
    564,784.89/779,403.06 = 306,660.57/x
  3. Step 3: Cross multiply
    564,784.89x = 779,403.06 × 306,660.57
  4. Step 4: Simplify right side
    564,784.89x = 239,012,187,004.69
  5. Step 5: Solve for x
    x = 239,012,187,004.69/564,784.89
  6. Step 6: Final answer
    x = 423,191.54

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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.