Home / 928,085.76-1,280,864.34-520,297.56

Finding the Fourth Proportional to 928,085.76, 1,280,864.34 and 520,297.56

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Solution

The fourth proportional to 928,085.76, 1,280,864.34 and 520,297.56 is: 718,070.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,085.76 : 1,280,864.34 = 520,297.56 : x
  2. Step 2: Convert to fraction form
    928,085.76/1,280,864.34 = 520,297.56/x
  3. Step 3: Cross multiply
    928,085.76x = 1,280,864.34 × 520,297.56
  4. Step 4: Simplify right side
    928,085.76x = 666,430,590,793.01
  5. Step 5: Solve for x
    x = 666,430,590,793.01/928,085.76
  6. Step 6: Final answer
    x = 718,070.05

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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.