Home / 497,867.12-687,097.72-283,074.80

Finding the Fourth Proportional to 497,867.12, 687,097.72 and 283,074.80

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Solution

The fourth proportional to 497,867.12, 687,097.72 and 283,074.80 is: 390,666.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,867.12 : 687,097.72 = 283,074.80 : x
  2. Step 2: Convert to fraction form
    497,867.12/687,097.72 = 283,074.80/x
  3. Step 3: Cross multiply
    497,867.12x = 687,097.72 × 283,074.80
  4. Step 4: Simplify right side
    497,867.12x = 194,500,049,669.46
  5. Step 5: Solve for x
    x = 194,500,049,669.46/497,867.12
  6. Step 6: Final answer
    x = 390,666.59

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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.