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Finding the Fourth Proportional to 562,986.18, 776,892.06 and 308,331.90

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Solution

The fourth proportional to 562,986.18, 776,892.06 and 308,331.90 is: 425,482.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,986.18 : 776,892.06 = 308,331.90 : x
  2. Step 2: Convert to fraction form
    562,986.18/776,892.06 = 308,331.90/x
  3. Step 3: Cross multiply
    562,986.18x = 776,892.06 × 308,331.90
  4. Step 4: Simplify right side
    562,986.18x = 239,540,604,954.71
  5. Step 5: Solve for x
    x = 239,540,604,954.71/562,986.18
  6. Step 6: Final answer
    x = 425,482.21

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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.