Home / 918,243.74-1,377,390.24-287,157.56

Finding the Fourth Proportional to 918,243.74, 1,377,390.24 and 287,157.56

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Solution

The fourth proportional to 918,243.74, 1,377,390.24 and 287,157.56 is: 430,744.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,243.74 : 1,377,390.24 = 287,157.56 : x
  2. Step 2: Convert to fraction form
    918,243.74/1,377,390.24 = 287,157.56/x
  3. Step 3: Cross multiply
    918,243.74x = 1,377,390.24 × 287,157.56
  4. Step 4: Simplify right side
    918,243.74x = 395,528,020,486.21
  5. Step 5: Solve for x
    x = 395,528,020,486.21/918,243.74
  6. Step 6: Final answer
    x = 430,744.04

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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.