Home / 497,637.15-686,718.90-279,839.63

Finding the Fourth Proportional to 497,637.15, 686,718.90 and 279,839.63

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Solution

The fourth proportional to 497,637.15, 686,718.90 and 279,839.63 is: 386,167.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,637.15 : 686,718.90 = 279,839.63 : x
  2. Step 2: Convert to fraction form
    497,637.15/686,718.90 = 279,839.63/x
  3. Step 3: Cross multiply
    497,637.15x = 686,718.90 × 279,839.63
  4. Step 4: Simplify right side
    497,637.15x = 192,171,162,890.01
  5. Step 5: Solve for x
    x = 192,171,162,890.01/497,637.15
  6. Step 6: Final answer
    x = 386,167.24

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1.5x scale

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.