Home / 545,905.89-815,974.31-474,259.77

Finding the Fourth Proportional to 545,905.89, 815,974.31 and 474,259.77

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Solution

The fourth proportional to 545,905.89, 815,974.31 and 474,259.77 is: 708,883.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,905.89 : 815,974.31 = 474,259.77 : x
  2. Step 2: Convert to fraction form
    545,905.89/815,974.31 = 474,259.77/x
  3. Step 3: Cross multiply
    545,905.89x = 815,974.31 × 474,259.77
  4. Step 4: Simplify right side
    545,905.89x = 386,983,789,772.16
  5. Step 5: Solve for x
    x = 386,983,789,772.16/545,905.89
  6. Step 6: Final answer
    x = 708,883.70

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.