Home / 1,390,240.38-1,916,897.10-1,114,377.66

Finding the Fourth Proportional to 1,390,240.38, 1,916,897.10 and 1,114,377.66

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Solution

The fourth proportional to 1,390,240.38, 1,916,897.10 and 1,114,377.66 is: 1,536,530.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,240.38 : 1,916,897.10 = 1,114,377.66 : x
  2. Step 2: Convert to fraction form
    1,390,240.38/1,916,897.10 = 1,114,377.66/x
  3. Step 3: Cross multiply
    1,390,240.38x = 1,916,897.10 × 1,114,377.66
  4. Step 4: Simplify right side
    1,390,240.38x = 2,136,147,304,758.79
  5. Step 5: Solve for x
    x = 2,136,147,304,758.79/1,390,240.38
  6. Step 6: Final answer
    x = 1,536,530.90

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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.