Home / 763,411.10-1,144,137.45-426,451.10

Finding the Fourth Proportional to 763,411.10, 1,144,137.45 and 426,451.10

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Solution

The fourth proportional to 763,411.10, 1,144,137.45 and 426,451.10 is: 639,129.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,411.10 : 1,144,137.45 = 426,451.10 : x
  2. Step 2: Convert to fraction form
    763,411.10/1,144,137.45 = 426,451.10/x
  3. Step 3: Cross multiply
    763,411.10x = 1,144,137.45 × 426,451.10
  4. Step 4: Simplify right side
    763,411.10x = 487,918,674,103.70
  5. Step 5: Solve for x
    x = 487,918,674,103.70/763,411.10
  6. Step 6: Final answer
    x = 639,129.66

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Double scale
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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.