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Finding the Fourth Proportional to 1,266,835.02, 1,748,266.32 and 715,506.48

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Solution

The fourth proportional to 1,266,835.02, 1,748,266.32 and 715,506.48 is: 987,418.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266,835.02 : 1,748,266.32 = 715,506.48 : x
  2. Step 2: Convert to fraction form
    1,266,835.02/1,748,266.32 = 715,506.48/x
  3. Step 3: Cross multiply
    1,266,835.02x = 1,748,266.32 × 715,506.48
  4. Step 4: Simplify right side
    1,266,835.02x = 1,250,895,880,725.75
  5. Step 5: Solve for x
    x = 1,250,895,880,725.75/1,266,835.02
  6. Step 6: Final answer
    x = 987,418.14

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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.