Home / 688,815.36-950,576.58-378,731.05

Finding the Fourth Proportional to 688,815.36, 950,576.58 and 378,731.05

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Solution

The fourth proportional to 688,815.36, 950,576.58 and 378,731.05 is: 522,655.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,815.36 : 950,576.58 = 378,731.05 : x
  2. Step 2: Convert to fraction form
    688,815.36/950,576.58 = 378,731.05/x
  3. Step 3: Cross multiply
    688,815.36x = 950,576.58 × 378,731.05
  4. Step 4: Simplify right side
    688,815.36x = 360,012,863,872.37
  5. Step 5: Solve for x
    x = 360,012,863,872.37/688,815.36
  6. Step 6: Final answer
    x = 522,655.10

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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.