Home / 917,663.28-1,266,577.73-509,905.23

Finding the Fourth Proportional to 917,663.28, 1,266,577.73 and 509,905.23

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Solution

The fourth proportional to 917,663.28, 1,266,577.73 and 509,905.23 is: 703,781.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,663.28 : 1,266,577.73 = 509,905.23 : x
  2. Step 2: Convert to fraction form
    917,663.28/1,266,577.73 = 509,905.23/x
  3. Step 3: Cross multiply
    917,663.28x = 1,266,577.73 × 509,905.23
  4. Step 4: Simplify right side
    917,663.28x = 645,834,608,728.53
  5. Step 5: Solve for x
    x = 645,834,608,728.53/917,663.28
  6. Step 6: Final answer
    x = 703,781.68

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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.