Home / 772,666.60-1,158,999.90-489,231.40

Finding the Fourth Proportional to 772,666.60, 1,158,999.90 and 489,231.40

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Solution

The fourth proportional to 772,666.60, 1,158,999.90 and 489,231.40 is: 733,847.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,666.60 : 1,158,999.90 = 489,231.40 : x
  2. Step 2: Convert to fraction form
    772,666.60/1,158,999.90 = 489,231.40/x
  3. Step 3: Cross multiply
    772,666.60x = 1,158,999.90 × 489,231.40
  4. Step 4: Simplify right side
    772,666.60x = 567,019,143,676.86
  5. Step 5: Solve for x
    x = 567,019,143,676.86/772,666.60
  6. Step 6: Final answer
    x = 733,847.10

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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.