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Finding the Fourth Proportional to 497,465.26, 686,526.39 and 279,742.45

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Solution

The fourth proportional to 497,465.26, 686,526.39 and 279,742.45 is: 386,058.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,465.26 : 686,526.39 = 279,742.45 : x
  2. Step 2: Convert to fraction form
    497,465.26/686,526.39 = 279,742.45/x
  3. Step 3: Cross multiply
    497,465.26x = 686,526.39 × 279,742.45
  4. Step 4: Simplify right side
    497,465.26x = 192,050,574,328.26
  5. Step 5: Solve for x
    x = 192,050,574,328.26/497,465.26
  6. Step 6: Final answer
    x = 386,058.26

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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.