Home / 1,780,065.76-2,669,803.04-642,609.76

Finding the Fourth Proportional to 1,780,065.76, 2,669,803.04 and 642,609.76

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Solution

The fourth proportional to 1,780,065.76, 2,669,803.04 and 642,609.76 is: 963,807.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,780,065.76 : 2,669,803.04 = 642,609.76 : x
  2. Step 2: Convert to fraction form
    1,780,065.76/2,669,803.04 = 642,609.76/x
  3. Step 3: Cross multiply
    1,780,065.76x = 2,669,803.04 × 642,609.76
  4. Step 4: Simplify right side
    1,780,065.76x = 1,715,641,490,781.67
  5. Step 5: Solve for x
    x = 1,715,641,490,781.67/1,780,065.76
  6. Step 6: Final answer
    x = 963,807.93

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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.