Home / 918,357.60-1,377,536.40-419,721.60

Finding the Fourth Proportional to 918,357.60, 1,377,536.40 and 419,721.60

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Solution

The fourth proportional to 918,357.60, 1,377,536.40 and 419,721.60 is: 629,582.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,357.60 : 1,377,536.40 = 419,721.60 : x
  2. Step 2: Convert to fraction form
    918,357.60/1,377,536.40 = 419,721.60/x
  3. Step 3: Cross multiply
    918,357.60x = 1,377,536.40 × 419,721.60
  4. Step 4: Simplify right side
    918,357.60x = 578,181,781,866.24
  5. Step 5: Solve for x
    x = 578,181,781,866.24/918,357.60
  6. Step 6: Final answer
    x = 629,582.40

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1.5x scale

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.