Home / 563,120.16-777,105.78-308,471.28

Finding the Fourth Proportional to 563,120.16, 777,105.78 and 308,471.28

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Solution

The fourth proportional to 563,120.16, 777,105.78 and 308,471.28 is: 425,690.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,120.16 : 777,105.78 = 308,471.28 : x
  2. Step 2: Convert to fraction form
    563,120.16/777,105.78 = 308,471.28/x
  3. Step 3: Cross multiply
    563,120.16x = 777,105.78 × 308,471.28
  4. Step 4: Simplify right side
    563,120.16x = 239,714,814,652.00
  5. Step 5: Solve for x
    x = 239,714,814,652.00/563,120.16
  6. Step 6: Final answer
    x = 425,690.34

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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.