Home / 513,832.16-709,089-287,477.84

Finding the Fourth Proportional to 513,832.16, 709,089 and 287,477.84

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Solution

The fourth proportional to 513,832.16, 709,089 and 287,477.84 is: 396,719.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,832.16 : 709,089 = 287,477.84 : x
  2. Step 2: Convert to fraction form
    513,832.16/709,089 = 287,477.84/x
  3. Step 3: Cross multiply
    513,832.16x = 709,089 × 287,477.84
  4. Step 4: Simplify right side
    513,832.16x = 203,847,374,087.76
  5. Step 5: Solve for x
    x = 203,847,374,087.76/513,832.16
  6. Step 6: Final answer
    x = 396,719.77

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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.