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Finding the Fourth Proportional to 611,802.49, 844,388.55 and 509,666.17

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Solution

The fourth proportional to 611,802.49, 844,388.55 and 509,666.17 is: 703,423.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,802.49 : 844,388.55 = 509,666.17 : x
  2. Step 2: Convert to fraction form
    611,802.49/844,388.55 = 509,666.17/x
  3. Step 3: Cross multiply
    611,802.49x = 844,388.55 × 509,666.17
  4. Step 4: Simplify right side
    611,802.49x = 430,356,278,270.35
  5. Step 5: Solve for x
    x = 430,356,278,270.35/611,802.49
  6. Step 6: Final answer
    x = 703,423.55

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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.