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Finding the Fourth Proportional to 566,428.73, 781,690.79 and 308,315.08

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Solution

The fourth proportional to 566,428.73, 781,690.79 and 308,315.08 is: 425,485.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,428.73 : 781,690.79 = 308,315.08 : x
  2. Step 2: Convert to fraction form
    566,428.73/781,690.79 = 308,315.08/x
  3. Step 3: Cross multiply
    566,428.73x = 781,690.79 × 308,315.08
  4. Step 4: Simplify right side
    566,428.73x = 241,007,057,270.67
  5. Step 5: Solve for x
    x = 241,007,057,270.67/566,428.73
  6. Step 6: Final answer
    x = 425,485.23

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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.