Home / 1,291,811.40-1,937,486.70-817,648.20

Finding the Fourth Proportional to 1,291,811.40, 1,937,486.70 and 817,648.20

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Solution

The fourth proportional to 1,291,811.40, 1,937,486.70 and 817,648.20 is: 1,226,326.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,811.40 : 1,937,486.70 = 817,648.20 : x
  2. Step 2: Convert to fraction form
    1,291,811.40/1,937,486.70 = 817,648.20/x
  3. Step 3: Cross multiply
    1,291,811.40x = 1,937,486.70 × 817,648.20
  4. Step 4: Simplify right side
    1,291,811.40x = 1,584,182,512,778.94
  5. Step 5: Solve for x
    x = 1,584,182,512,778.94/1,291,811.40
  6. Step 6: Final answer
    x = 1,226,326.47

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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.