Home / 497,403.42-686,392.29-282,515.28

Finding the Fourth Proportional to 497,403.42, 686,392.29 and 282,515.28

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Solution

The fourth proportional to 497,403.42, 686,392.29 and 282,515.28 is: 389,857.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,403.42 : 686,392.29 = 282,515.28 : x
  2. Step 2: Convert to fraction form
    497,403.42/686,392.29 = 282,515.28/x
  3. Step 3: Cross multiply
    497,403.42x = 686,392.29 × 282,515.28
  4. Step 4: Simplify right side
    497,403.42x = 193,916,309,999.19
  5. Step 5: Solve for x
    x = 193,916,309,999.19/497,403.42
  6. Step 6: Final answer
    x = 389,857.21

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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.