Home / 928,007.58-1,280,756.70-520,219.56

Finding the Fourth Proportional to 928,007.58, 1,280,756.70 and 520,219.56

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Solution

The fourth proportional to 928,007.58, 1,280,756.70 and 520,219.56 is: 717,962.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,007.58 : 1,280,756.70 = 520,219.56 : x
  2. Step 2: Convert to fraction form
    928,007.58/1,280,756.70 = 520,219.56/x
  3. Step 3: Cross multiply
    928,007.58x = 1,280,756.70 × 520,219.56
  4. Step 4: Simplify right side
    928,007.58x = 666,274,686,941.05
  5. Step 5: Solve for x
    x = 666,274,686,941.05/928,007.58
  6. Step 6: Final answer
    x = 717,962.55

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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.