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Finding the Fourth Proportional to 564,459.33, 778,954.28 and 306,336.21

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Solution

The fourth proportional to 564,459.33, 778,954.28 and 306,336.21 is: 422,744.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,459.33 : 778,954.28 = 306,336.21 : x
  2. Step 2: Convert to fraction form
    564,459.33/778,954.28 = 306,336.21/x
  3. Step 3: Cross multiply
    564,459.33x = 778,954.28 × 306,336.21
  4. Step 4: Simplify right side
    564,459.33x = 238,621,896,472.03
  5. Step 5: Solve for x
    x = 238,621,896,472.03/564,459.33
  6. Step 6: Final answer
    x = 422,744.18

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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.