Home / 990,357.86-1,485,750.02-307,230.87

Finding the Fourth Proportional to 990,357.86, 1,485,750.02 and 307,230.87

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Solution

The fourth proportional to 990,357.86, 1,485,750.02 and 307,230.87 is: 460,912.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,357.86 : 1,485,750.02 = 307,230.87 : x
  2. Step 2: Convert to fraction form
    990,357.86/1,485,750.02 = 307,230.87/x
  3. Step 3: Cross multiply
    990,357.86x = 1,485,750.02 × 307,230.87
  4. Step 4: Simplify right side
    990,357.86x = 456,468,272,015.20
  5. Step 5: Solve for x
    x = 456,468,272,015.20/990,357.86
  6. Step 6: Final answer
    x = 460,912.45

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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.