Home / 634,942.68-876,494.20-389,967.12

Finding the Fourth Proportional to 634,942.68, 876,494.20 and 389,967.12

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Solution

The fourth proportional to 634,942.68, 876,494.20 and 389,967.12 is: 538,322.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,942.68 : 876,494.20 = 389,967.12 : x
  2. Step 2: Convert to fraction form
    634,942.68/876,494.20 = 389,967.12/x
  3. Step 3: Cross multiply
    634,942.68x = 876,494.20 × 389,967.12
  4. Step 4: Simplify right side
    634,942.68x = 341,803,918,870.70
  5. Step 5: Solve for x
    x = 341,803,918,870.70/634,942.68
  6. Step 6: Final answer
    x = 538,322.48

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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.