Home / 561,815,999.40-842,723,999.10-459,695,346.60

Finding the Fourth Proportional to 561,815,999.40, 842,723,999.10 and 459,695,346.60

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Solution

The fourth proportional to 561,815,999.40, 842,723,999.10 and 459,695,346.60 is: 689,543,019.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,815,999.40 : 842,723,999.10 = 459,695,346.60 : x
  2. Step 2: Convert to fraction form
    561,815,999.40/842,723,999.10 = 459,695,346.60/x
  3. Step 3: Cross multiply
    561,815,999.40x = 842,723,999.10 × 459,695,346.60
  4. Step 4: Simplify right side
    561,815,999.40x = 387,396,300,854,412,608
  5. Step 5: Solve for x
    x = 387,396,300,854,412,608/561,815,999.40
  6. Step 6: Final answer
    x = 689,543,019.90

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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.