Home / 1,382,981.67-1,908,506.88-771,141.76

Finding the Fourth Proportional to 1,382,981.67, 1,908,506.88 and 771,141.76

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Solution

The fourth proportional to 1,382,981.67, 1,908,506.88 and 771,141.76 is: 1,064,171.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,382,981.67 : 1,908,506.88 = 771,141.76 : x
  2. Step 2: Convert to fraction form
    1,382,981.67/1,908,506.88 = 771,141.76/x
  3. Step 3: Cross multiply
    1,382,981.67x = 1,908,506.88 × 771,141.76
  4. Step 4: Simplify right side
    1,382,981.67x = 1,471,729,349,644.04
  5. Step 5: Solve for x
    x = 1,471,729,349,644.04/1,382,981.67
  6. Step 6: Final answer
    x = 1,064,171.26

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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.