Home / 1,420,425.90-2,130,936.93-409,545.90

Finding the Fourth Proportional to 1,420,425.90, 2,130,936.93 and 409,545.90

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Solution

The fourth proportional to 1,420,425.90, 2,130,936.93 and 409,545.90 is: 614,404.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,425.90 : 2,130,936.93 = 409,545.90 : x
  2. Step 2: Convert to fraction form
    1,420,425.90/2,130,936.93 = 409,545.90/x
  3. Step 3: Cross multiply
    1,420,425.90x = 2,130,936.93 × 409,545.90
  4. Step 4: Simplify right side
    1,420,425.90x = 872,716,482,840.09
  5. Step 5: Solve for x
    x = 872,716,482,840.09/1,420,425.90
  6. Step 6: Final answer
    x = 614,404.79

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1.5x scale

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.