Home / 1,626,357.43-2,439,655.98-428,271.45

Finding the Fourth Proportional to 1,626,357.43, 2,439,655.98 and 428,271.45

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Solution

The fourth proportional to 1,626,357.43, 2,439,655.98 and 428,271.45 is: 642,438.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,626,357.43 : 2,439,655.98 = 428,271.45 : x
  2. Step 2: Convert to fraction form
    1,626,357.43/2,439,655.98 = 428,271.45/x
  3. Step 3: Cross multiply
    1,626,357.43x = 2,439,655.98 × 428,271.45
  4. Step 4: Simplify right side
    1,626,357.43x = 1,044,835,004,055.77
  5. Step 5: Solve for x
    x = 1,044,835,004,055.77/1,626,357.43
  6. Step 6: Final answer
    x = 642,438.73

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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.