Home / 1,420,857.90-2,131,237.71-355,909.14

Finding the Fourth Proportional to 1,420,857.90, 2,131,237.71 and 355,909.14

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Solution

The fourth proportional to 1,420,857.90, 2,131,237.71 and 355,909.14 is: 533,851.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,857.90 : 2,131,237.71 = 355,909.14 : x
  2. Step 2: Convert to fraction form
    1,420,857.90/2,131,237.71 = 355,909.14/x
  3. Step 3: Cross multiply
    1,420,857.90x = 2,131,237.71 × 355,909.14
  4. Step 4: Simplify right side
    1,420,857.90x = 758,526,980,501.67
  5. Step 5: Solve for x
    x = 758,526,980,501.67/1,420,857.90
  6. Step 6: Final answer
    x = 533,851.40

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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.