Home / 520,037.30-778,889.55-426,725.30

Finding the Fourth Proportional to 520,037.30, 778,889.55 and 426,725.30

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Solution

The fourth proportional to 520,037.30, 778,889.55 and 426,725.30 is: 639,130.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,037.30 : 778,889.55 = 426,725.30 : x
  2. Step 2: Convert to fraction form
    520,037.30/778,889.55 = 426,725.30/x
  3. Step 3: Cross multiply
    520,037.30x = 778,889.55 × 426,725.30
  4. Step 4: Simplify right side
    520,037.30x = 332,371,876,890.62
  5. Step 5: Solve for x
    x = 332,371,876,890.62/520,037.30
  6. Step 6: Final answer
    x = 639,130.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.