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Finding the Fourth Proportional to 562,990.18, 776,897.58 and 308,335.90

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Solution

The fourth proportional to 562,990.18, 776,897.58 and 308,335.90 is: 425,487.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,990.18 : 776,897.58 = 308,335.90 : x
  2. Step 2: Convert to fraction form
    562,990.18/776,897.58 = 308,335.90/x
  3. Step 3: Cross multiply
    562,990.18x = 776,897.58 × 308,335.90
  4. Step 4: Simplify right side
    562,990.18x = 239,545,414,537.12
  5. Step 5: Solve for x
    x = 239,545,414,537.12/562,990.18
  6. Step 6: Final answer
    x = 425,487.73

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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.