Home / 920,342.80-1,380,528.48-289,256.62

Finding the Fourth Proportional to 920,342.80, 1,380,528.48 and 289,256.62

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Solution

The fourth proportional to 920,342.80, 1,380,528.48 and 289,256.62 is: 433,889.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,342.80 : 1,380,528.48 = 289,256.62 : x
  2. Step 2: Convert to fraction form
    920,342.80/1,380,528.48 = 289,256.62/x
  3. Step 3: Cross multiply
    920,342.80x = 1,380,528.48 × 289,256.62
  4. Step 4: Simplify right side
    920,342.80x = 399,327,001,938.54
  5. Step 5: Solve for x
    x = 399,327,001,938.54/920,342.80
  6. Step 6: Final answer
    x = 433,889.42

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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.