Home / 1,038,464.40-1,558,571.40-407,830.80

Finding the Fourth Proportional to 1,038,464.40, 1,558,571.40 and 407,830.80

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Solution

The fourth proportional to 1,038,464.40, 1,558,571.40 and 407,830.80 is: 612,089.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038,464.40 : 1,558,571.40 = 407,830.80 : x
  2. Step 2: Convert to fraction form
    1,038,464.40/1,558,571.40 = 407,830.80/x
  3. Step 3: Cross multiply
    1,038,464.40x = 1,558,571.40 × 407,830.80
  4. Step 4: Simplify right side
    1,038,464.40x = 635,633,420,919.12
  5. Step 5: Solve for x
    x = 635,633,420,919.12/1,038,464.40
  6. Step 6: Final answer
    x = 612,089.76

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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.