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Finding the Fourth Proportional to 764,712.70, 1,055,300.07 and 425,160.70

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Solution

The fourth proportional to 764,712.70, 1,055,300.07 and 425,160.70 is: 586,719.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,712.70 : 1,055,300.07 = 425,160.70 : x
  2. Step 2: Convert to fraction form
    764,712.70/1,055,300.07 = 425,160.70/x
  3. Step 3: Cross multiply
    764,712.70x = 1,055,300.07 × 425,160.70
  4. Step 4: Simplify right side
    764,712.70x = 448,672,116,471.25
  5. Step 5: Solve for x
    x = 448,672,116,471.25/764,712.70
  6. Step 6: Final answer
    x = 586,719.84

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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.