Home / 1,209,738.90-1,814,608.35-411,921.30

Finding the Fourth Proportional to 1,209,738.90, 1,814,608.35 and 411,921.30

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Solution

The fourth proportional to 1,209,738.90, 1,814,608.35 and 411,921.30 is: 617,881.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,738.90 : 1,814,608.35 = 411,921.30 : x
  2. Step 2: Convert to fraction form
    1,209,738.90/1,814,608.35 = 411,921.30/x
  3. Step 3: Cross multiply
    1,209,738.90x = 1,814,608.35 × 411,921.30
  4. Step 4: Simplify right side
    1,209,738.90x = 747,475,830,522.86
  5. Step 5: Solve for x
    x = 747,475,830,522.86/1,209,738.90
  6. Step 6: Final answer
    x = 617,881.95

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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.