Home / 840,319.36-1,262,343.46-520,707.54

Finding the Fourth Proportional to 840,319.36, 1,262,343.46 and 520,707.54

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Solution

The fourth proportional to 840,319.36, 1,262,343.46 and 520,707.54 is: 782,216.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,319.36 : 1,262,343.46 = 520,707.54 : x
  2. Step 2: Convert to fraction form
    840,319.36/1,262,343.46 = 520,707.54/x
  3. Step 3: Cross multiply
    840,319.36x = 1,262,343.46 × 520,707.54
  4. Step 4: Simplify right side
    840,319.36x = 657,311,756,463.84
  5. Step 5: Solve for x
    x = 657,311,756,463.84/840,319.36
  6. Step 6: Final answer
    x = 782,216.60

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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.