Home / 763,070.70-1,145,124.45-426,110.70

Finding the Fourth Proportional to 763,070.70, 1,145,124.45 and 426,110.70

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Solution

The fourth proportional to 763,070.70, 1,145,124.45 and 426,110.70 is: 639,455.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,070.70 : 1,145,124.45 = 426,110.70 : x
  2. Step 2: Convert to fraction form
    763,070.70/1,145,124.45 = 426,110.70/x
  3. Step 3: Cross multiply
    763,070.70x = 1,145,124.45 × 426,110.70
  4. Step 4: Simplify right side
    763,070.70x = 487,949,780,976.62
  5. Step 5: Solve for x
    x = 487,949,780,976.62/763,070.70
  6. Step 6: Final answer
    x = 639,455.53

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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.