Home / 771,959.64-1,065,180.28-485,276.74

Finding the Fourth Proportional to 771,959.64, 1,065,180.28 and 485,276.74

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Solution

The fourth proportional to 771,959.64, 1,065,180.28 and 485,276.74 is: 669,603.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,959.64 : 1,065,180.28 = 485,276.74 : x
  2. Step 2: Convert to fraction form
    771,959.64/1,065,180.28 = 485,276.74/x
  3. Step 3: Cross multiply
    771,959.64x = 1,065,180.28 × 485,276.74
  4. Step 4: Simplify right side
    771,959.64x = 516,907,213,790.69
  5. Step 5: Solve for x
    x = 516,907,213,790.69/771,959.64
  6. Step 6: Final answer
    x = 669,603.94

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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.