Home / 919,987.58-1,269,582.99-512,080.76

Finding the Fourth Proportional to 919,987.58, 1,269,582.99 and 512,080.76

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Solution

The fourth proportional to 919,987.58, 1,269,582.99 and 512,080.76 is: 706,671.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,987.58 : 1,269,582.99 = 512,080.76 : x
  2. Step 2: Convert to fraction form
    919,987.58/1,269,582.99 = 512,080.76/x
  3. Step 3: Cross multiply
    919,987.58x = 1,269,582.99 × 512,080.76
  4. Step 4: Simplify right side
    919,987.58x = 650,129,022,402.27
  5. Step 5: Solve for x
    x = 650,129,022,402.27/919,987.58
  6. Step 6: Final answer
    x = 706,671.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.