Home / 1,383,281.64-1,908,924.99-771,435.12

Finding the Fourth Proportional to 1,383,281.64, 1,908,924.99 and 771,435.12

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Solution

The fourth proportional to 1,383,281.64, 1,908,924.99 and 771,435.12 is: 1,064,578.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383,281.64 : 1,908,924.99 = 771,435.12 : x
  2. Step 2: Convert to fraction form
    1,383,281.64/1,908,924.99 = 771,435.12/x
  3. Step 3: Cross multiply
    1,383,281.64x = 1,908,924.99 × 771,435.12
  4. Step 4: Simplify right side
    1,383,281.64x = 1,472,611,778,731.65
  5. Step 5: Solve for x
    x = 1,472,611,778,731.65/1,383,281.64
  6. Step 6: Final answer
    x = 1,064,578.42

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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.