Home / 648,205.20-971,724.60-423,673.20

Finding the Fourth Proportional to 648,205.20, 971,724.60 and 423,673.20

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Solution

The fourth proportional to 648,205.20, 971,724.60 and 423,673.20 is: 635,128.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,205.20 : 971,724.60 = 423,673.20 : x
  2. Step 2: Convert to fraction form
    648,205.20/971,724.60 = 423,673.20/x
  3. Step 3: Cross multiply
    648,205.20x = 971,724.60 × 423,673.20
  4. Step 4: Simplify right side
    648,205.20x = 411,693,670,800.72
  5. Step 5: Solve for x
    x = 411,693,670,800.72/648,205.20
  6. Step 6: Final answer
    x = 635,128.61

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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.