Home / 927,921.40-1,280,638.14-520,133.56

Finding the Fourth Proportional to 927,921.40, 1,280,638.14 and 520,133.56

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Solution

The fourth proportional to 927,921.40, 1,280,638.14 and 520,133.56 is: 717,844.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    927,921.40 : 1,280,638.14 = 520,133.56 : x
  2. Step 2: Convert to fraction form
    927,921.40/1,280,638.14 = 520,133.56/x
  3. Step 3: Cross multiply
    927,921.40x = 1,280,638.14 × 520,133.56
  4. Step 4: Simplify right side
    927,921.40x = 666,102,874,829.98
  5. Step 5: Solve for x
    x = 666,102,874,829.98/927,921.40
  6. Step 6: Final answer
    x = 717,844.07

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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.