Home / 629,434.04-868,947.40-491,316.44

Finding the Fourth Proportional to 629,434.04, 868,947.40 and 491,316.44

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Solution

The fourth proportional to 629,434.04, 868,947.40 and 491,316.44 is: 678,273.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,434.04 : 868,947.40 = 491,316.44 : x
  2. Step 2: Convert to fraction form
    629,434.04/868,947.40 = 491,316.44/x
  3. Step 3: Cross multiply
    629,434.04x = 868,947.40 × 491,316.44
  4. Step 4: Simplify right side
    629,434.04x = 426,928,143,115.26
  5. Step 5: Solve for x
    x = 426,928,143,115.26/629,434.04
  6. Step 6: Final answer
    x = 678,273.05

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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.