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Finding the Fourth Proportional to 564,648.20, 779,215.83 and 310,015.79

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Solution

The fourth proportional to 564,648.20, 779,215.83 and 310,015.79 is: 427,822.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,648.20 : 779,215.83 = 310,015.79 : x
  2. Step 2: Convert to fraction form
    564,648.20/779,215.83 = 310,015.79/x
  3. Step 3: Cross multiply
    564,648.20x = 779,215.83 × 310,015.79
  4. Step 4: Simplify right side
    564,648.20x = 241,569,211,117.96
  5. Step 5: Solve for x
    x = 241,569,211,117.96/564,648.20
  6. Step 6: Final answer
    x = 427,822.51

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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.