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Finding the Fourth Proportional to 1,295,512.86, 1,787,810.85 and 722,590.14

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Solution

The fourth proportional to 1,295,512.86, 1,787,810.85 and 722,590.14 is: 997,176.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295,512.86 : 1,787,810.85 = 722,590.14 : x
  2. Step 2: Convert to fraction form
    1,295,512.86/1,787,810.85 = 722,590.14/x
  3. Step 3: Cross multiply
    1,295,512.86x = 1,787,810.85 × 722,590.14
  4. Step 4: Simplify right side
    1,295,512.86x = 1,291,854,492,395.02
  5. Step 5: Solve for x
    x = 1,291,854,492,395.02/1,295,512.86
  6. Step 6: Final answer
    x = 997,176.12

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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.