Home / 918,009.60-1,377,014.40-444,742.80

Finding the Fourth Proportional to 918,009.60, 1,377,014.40 and 444,742.80

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Solution

The fourth proportional to 918,009.60, 1,377,014.40 and 444,742.80 is: 667,114.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,009.60 : 1,377,014.40 = 444,742.80 : x
  2. Step 2: Convert to fraction form
    918,009.60/1,377,014.40 = 444,742.80/x
  3. Step 3: Cross multiply
    918,009.60x = 1,377,014.40 × 444,742.80
  4. Step 4: Simplify right side
    918,009.60x = 612,417,239,896.32
  5. Step 5: Solve for x
    x = 612,417,239,896.32/918,009.60
  6. Step 6: Final answer
    x = 667,114.20

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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.