Home / 918,359.60-1,377,539.40-419,723.60

Finding the Fourth Proportional to 918,359.60, 1,377,539.40 and 419,723.60

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Solution

The fourth proportional to 918,359.60, 1,377,539.40 and 419,723.60 is: 629,585.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,359.60 : 1,377,539.40 = 419,723.60 : x
  2. Step 2: Convert to fraction form
    918,359.60/1,377,539.40 = 419,723.60/x
  3. Step 3: Cross multiply
    918,359.60x = 1,377,539.40 × 419,723.60
  4. Step 4: Simplify right side
    918,359.60x = 578,185,796,109.84
  5. Step 5: Solve for x
    x = 578,185,796,109.84/918,359.60
  6. Step 6: Final answer
    x = 629,585.40

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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.