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Finding the Fourth Proportional to 999,301.12, 1,379,169 and 563,807.88

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Solution

The fourth proportional to 999,301.12, 1,379,169 and 563,807.88 is: 778,130.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,301.12 : 1,379,169 = 563,807.88 : x
  2. Step 2: Convert to fraction form
    999,301.12/1,379,169 = 563,807.88/x
  3. Step 3: Cross multiply
    999,301.12x = 1,379,169 × 563,807.88
  4. Step 4: Simplify right side
    999,301.12x = 777,586,350,051.72
  5. Step 5: Solve for x
    x = 777,586,350,051.72/999,301.12
  6. Step 6: Final answer
    x = 778,130.17

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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.