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Finding the Fourth Proportional to 1,293,523.75, 1,938,814.23 and 786,968.13

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Solution

The fourth proportional to 1,293,523.75, 1,938,814.23 and 786,968.13 is: 1,179,557.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293,523.75 : 1,938,814.23 = 786,968.13 : x
  2. Step 2: Convert to fraction form
    1,293,523.75/1,938,814.23 = 786,968.13/x
  3. Step 3: Cross multiply
    1,293,523.75x = 1,938,814.23 × 786,968.13
  4. Step 4: Simplify right side
    1,293,523.75x = 1,525,785,009,000.49
  5. Step 5: Solve for x
    x = 1,525,785,009,000.49/1,293,523.75
  6. Step 6: Final answer
    x = 1,179,557.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.