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Finding the Fourth Proportional to 564,928.07, 779,598.07 and 306,803.21

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Solution

The fourth proportional to 564,928.07, 779,598.07 and 306,803.21 is: 423,386.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,928.07 : 779,598.07 = 306,803.21 : x
  2. Step 2: Convert to fraction form
    564,928.07/779,598.07 = 306,803.21/x
  3. Step 3: Cross multiply
    564,928.07x = 779,598.07 × 306,803.21
  4. Step 4: Simplify right side
    564,928.07x = 239,183,185,720.81
  5. Step 5: Solve for x
    x = 239,183,185,720.81/564,928.07
  6. Step 6: Final answer
    x = 423,386.98

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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.