Home / 1,423,645.30-2,134,845.78-426,140.02

Finding the Fourth Proportional to 1,423,645.30, 2,134,845.78 and 426,140.02

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Solution

The fourth proportional to 1,423,645.30, 2,134,845.78 and 426,140.02 is: 639,023.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,423,645.30 : 2,134,845.78 = 426,140.02 : x
  2. Step 2: Convert to fraction form
    1,423,645.30/2,134,845.78 = 426,140.02/x
  3. Step 3: Cross multiply
    1,423,645.30x = 2,134,845.78 × 426,140.02
  4. Step 4: Simplify right side
    1,423,645.30x = 909,743,223,386.12
  5. Step 5: Solve for x
    x = 909,743,223,386.12/1,423,645.30
  6. Step 6: Final answer
    x = 639,023.80

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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.