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Finding the Fourth Proportional to 879,266.64, 1,213,616.04 and 497,514.87

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Solution

The fourth proportional to 879,266.64, 1,213,616.04 and 497,514.87 is: 686,699.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,266.64 : 1,213,616.04 = 497,514.87 : x
  2. Step 2: Convert to fraction form
    879,266.64/1,213,616.04 = 497,514.87/x
  3. Step 3: Cross multiply
    879,266.64x = 1,213,616.04 × 497,514.87
  4. Step 4: Simplify right side
    879,266.64x = 603,792,026,370.52
  5. Step 5: Solve for x
    x = 603,792,026,370.52/879,266.64
  6. Step 6: Final answer
    x = 686,699.57

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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.