Home / 905,322.32-1,249,339.80-491,855.60

Finding the Fourth Proportional to 905,322.32, 1,249,339.80 and 491,855.60

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Solution

The fourth proportional to 905,322.32, 1,249,339.80 and 491,855.60 is: 678,758.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,322.32 : 1,249,339.80 = 491,855.60 : x
  2. Step 2: Convert to fraction form
    905,322.32/1,249,339.80 = 491,855.60/x
  3. Step 3: Cross multiply
    905,322.32x = 1,249,339.80 × 491,855.60
  4. Step 4: Simplify right side
    905,322.32x = 614,494,776,932.88
  5. Step 5: Solve for x
    x = 614,494,776,932.88/905,322.32
  6. Step 6: Final answer
    x = 678,758.01

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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.