Home / 1,487,121.09-2,230,682.91-407,645.40

Finding the Fourth Proportional to 1,487,121.09, 2,230,682.91 and 407,645.40

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Solution

The fourth proportional to 1,487,121.09, 2,230,682.91 and 407,645.40 is: 611,468.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487,121.09 : 2,230,682.91 = 407,645.40 : x
  2. Step 2: Convert to fraction form
    1,487,121.09/2,230,682.91 = 407,645.40/x
  3. Step 3: Cross multiply
    1,487,121.09x = 2,230,682.91 × 407,645.40
  4. Step 4: Simplify right side
    1,487,121.09x = 909,327,627,120.11
  5. Step 5: Solve for x
    x = 909,327,627,120.11/1,487,121.09
  6. Step 6: Final answer
    x = 611,468.45

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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.