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Finding the Fourth Proportional to 590,917.80, 885,339.90 and 485,164.20

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Solution

The fourth proportional to 590,917.80, 885,339.90 and 485,164.20 is: 726,895.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,917.80 : 885,339.90 = 485,164.20 : x
  2. Step 2: Convert to fraction form
    590,917.80/885,339.90 = 485,164.20/x
  3. Step 3: Cross multiply
    590,917.80x = 885,339.90 × 485,164.20
  4. Step 4: Simplify right side
    590,917.80x = 429,535,224,311.58
  5. Step 5: Solve for x
    x = 429,535,224,311.58/590,917.80
  6. Step 6: Final answer
    x = 726,895.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.