Home / 763,124.70-1,145,205.45-426,164.70

Finding the Fourth Proportional to 763,124.70, 1,145,205.45 and 426,164.70

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Solution

The fourth proportional to 763,124.70, 1,145,205.45 and 426,164.70 is: 639,536.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,124.70 : 1,145,205.45 = 426,164.70 : x
  2. Step 2: Convert to fraction form
    763,124.70/1,145,205.45 = 426,164.70/x
  3. Step 3: Cross multiply
    763,124.70x = 1,145,205.45 × 426,164.70
  4. Step 4: Simplify right side
    763,124.70x = 488,046,137,037.62
  5. Step 5: Solve for x
    x = 488,046,137,037.62/763,124.70
  6. Step 6: Final answer
    x = 639,536.55

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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.