Home / 1,221,750.20-1,833,500.10-512,287.40

Finding the Fourth Proportional to 1,221,750.20, 1,833,500.10 and 512,287.40

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Solution

The fourth proportional to 1,221,750.20, 1,833,500.10 and 512,287.40 is: 768,797.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,750.20 : 1,833,500.10 = 512,287.40 : x
  2. Step 2: Convert to fraction form
    1,221,750.20/1,833,500.10 = 512,287.40/x
  3. Step 3: Cross multiply
    1,221,750.20x = 1,833,500.10 × 512,287.40
  4. Step 4: Simplify right side
    1,221,750.20x = 939,278,999,128.74
  5. Step 5: Solve for x
    x = 939,278,999,128.74/1,221,750.20
  6. Step 6: Final answer
    x = 768,797.91

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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.