Home / 723,878.20-1,086,335.70-407,999.80

Finding the Fourth Proportional to 723,878.20, 1,086,335.70 and 407,999.80

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Solution

The fourth proportional to 723,878.20, 1,086,335.70 and 407,999.80 is: 612,291.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,878.20 : 1,086,335.70 = 407,999.80 : x
  2. Step 2: Convert to fraction form
    723,878.20/1,086,335.70 = 407,999.80/x
  3. Step 3: Cross multiply
    723,878.20x = 1,086,335.70 × 407,999.80
  4. Step 4: Simplify right side
    723,878.20x = 443,224,748,332.86
  5. Step 5: Solve for x
    x = 443,224,748,332.86/723,878.20
  6. Step 6: Final answer
    x = 612,291.89

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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.