Home / 778,971.02-1,170,511.46-419,407.72

Finding the Fourth Proportional to 778,971.02, 1,170,511.46 and 419,407.72

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Solution

The fourth proportional to 778,971.02, 1,170,511.46 and 419,407.72 is: 630,217.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,971.02 : 1,170,511.46 = 419,407.72 : x
  2. Step 2: Convert to fraction form
    778,971.02/1,170,511.46 = 419,407.72/x
  3. Step 3: Cross multiply
    778,971.02x = 1,170,511.46 × 419,407.72
  4. Step 4: Simplify right side
    778,971.02x = 490,921,543,775.81
  5. Step 5: Solve for x
    x = 490,921,543,775.81/778,971.02
  6. Step 6: Final answer
    x = 630,217.98

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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.