Home / 920,864.45-1,381,510.35-289,761.86

Finding the Fourth Proportional to 920,864.45, 1,381,510.35 and 289,761.86

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Solution

The fourth proportional to 920,864.45, 1,381,510.35 and 289,761.86 is: 434,710.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,864.45 : 1,381,510.35 = 289,761.86 : x
  2. Step 2: Convert to fraction form
    920,864.45/1,381,510.35 = 289,761.86/x
  3. Step 3: Cross multiply
    920,864.45x = 1,381,510.35 × 289,761.86
  4. Step 4: Simplify right side
    920,864.45x = 400,309,001,717.70
  5. Step 5: Solve for x
    x = 400,309,001,717.70/920,864.45
  6. Step 6: Final answer
    x = 434,710.02

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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.