Home / 1,420,861.32-1,960,816.86-776,321.46

Finding the Fourth Proportional to 1,420,861.32, 1,960,816.86 and 776,321.46

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Solution

The fourth proportional to 1,420,861.32, 1,960,816.86 and 776,321.46 is: 1,071,339.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,861.32 : 1,960,816.86 = 776,321.46 : x
  2. Step 2: Convert to fraction form
    1,420,861.32/1,960,816.86 = 776,321.46/x
  3. Step 3: Cross multiply
    1,420,861.32x = 1,960,816.86 × 776,321.46
  4. Step 4: Simplify right side
    1,420,861.32x = 1,522,224,207,547.82
  5. Step 5: Solve for x
    x = 1,522,224,207,547.82/1,420,861.32
  6. Step 6: Final answer
    x = 1,071,339.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.