Home / 1,626,347.80-2,439,337.08-428,363.88

Finding the Fourth Proportional to 1,626,347.80, 2,439,337.08 and 428,363.88

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Solution

The fourth proportional to 1,626,347.80, 2,439,337.08 and 428,363.88 is: 642,497.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,626,347.80 : 2,439,337.08 = 428,363.88 : x
  2. Step 2: Convert to fraction form
    1,626,347.80/2,439,337.08 = 428,363.88/x
  3. Step 3: Cross multiply
    1,626,347.80x = 2,439,337.08 × 428,363.88
  4. Step 4: Simplify right side
    1,626,347.80x = 1,044,923,896,216.67
  5. Step 5: Solve for x
    x = 1,044,923,896,216.67/1,626,347.80
  6. Step 6: Final answer
    x = 642,497.19

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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.