Home / 1,240,801.70-1,862,128.98-921,690.45

Finding the Fourth Proportional to 1,240,801.70, 1,862,128.98 and 921,690.45

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Solution

The fourth proportional to 1,240,801.70, 1,862,128.98 and 921,690.45 is: 1,383,223.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,801.70 : 1,862,128.98 = 921,690.45 : x
  2. Step 2: Convert to fraction form
    1,240,801.70/1,862,128.98 = 921,690.45/x
  3. Step 3: Cross multiply
    1,240,801.70x = 1,862,128.98 × 921,690.45
  4. Step 4: Simplify right side
    1,240,801.70x = 1,716,306,497,534.24
  5. Step 5: Solve for x
    x = 1,716,306,497,534.24/1,240,801.70
  6. Step 6: Final answer
    x = 1,383,223.85

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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.