Home / 920,157.64-1,380,457.92-387,830.92

Finding the Fourth Proportional to 920,157.64, 1,380,457.92 and 387,830.92

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Solution

The fourth proportional to 920,157.64, 1,380,457.92 and 387,830.92 is: 581,839.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,157.64 : 1,380,457.92 = 387,830.92 : x
  2. Step 2: Convert to fraction form
    920,157.64/1,380,457.92 = 387,830.92/x
  3. Step 3: Cross multiply
    920,157.64x = 1,380,457.92 × 387,830.92
  4. Step 4: Simplify right side
    920,157.64x = 535,384,265,134.89
  5. Step 5: Solve for x
    x = 535,384,265,134.89/920,157.64
  6. Step 6: Final answer
    x = 581,839.72

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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.