Home / 987,364.60-1,481,738.10-426,801.40

Finding the Fourth Proportional to 987,364.60, 1,481,738.10 and 426,801.40

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Solution

The fourth proportional to 987,364.60, 1,481,738.10 and 426,801.40 is: 640,500.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,364.60 : 1,481,738.10 = 426,801.40 : x
  2. Step 2: Convert to fraction form
    987,364.60/1,481,738.10 = 426,801.40/x
  3. Step 3: Cross multiply
    987,364.60x = 1,481,738.10 × 426,801.40
  4. Step 4: Simplify right side
    987,364.60x = 632,407,895,513.34
  5. Step 5: Solve for x
    x = 632,407,895,513.34/987,364.60
  6. Step 6: Final answer
    x = 640,500.88

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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.