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Finding the Fourth Proportional to 1,329,899.22, 1,835,157.20 and 785,931.57

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Solution

The fourth proportional to 1,329,899.22, 1,835,157.20 and 785,931.57 is: 1,084,524.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329,899.22 : 1,835,157.20 = 785,931.57 : x
  2. Step 2: Convert to fraction form
    1,329,899.22/1,835,157.20 = 785,931.57/x
  3. Step 3: Cross multiply
    1,329,899.22x = 1,835,157.20 × 785,931.57
  4. Step 4: Simplify right side
    1,329,899.22x = 1,442,307,975,463.15
  5. Step 5: Solve for x
    x = 1,442,307,975,463.15/1,329,899.22
  6. Step 6: Final answer
    x = 1,084,524.27

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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.