Home / 920,612.77-1,380,886.50-280,890.67

Finding the Fourth Proportional to 920,612.77, 1,380,886.50 and 280,890.67

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Solution

The fourth proportional to 920,612.77, 1,380,886.50 and 280,890.67 is: 421,326.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,612.77 : 1,380,886.50 = 280,890.67 : x
  2. Step 2: Convert to fraction form
    920,612.77/1,380,886.50 = 280,890.67/x
  3. Step 3: Cross multiply
    920,612.77x = 1,380,886.50 × 280,890.67
  4. Step 4: Simplify right side
    920,612.77x = 387,878,134,178.96
  5. Step 5: Solve for x
    x = 387,878,134,178.96/920,612.77
  6. Step 6: Final answer
    x = 421,326.04

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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.