Home / 521,667.84-719,904.60-306,816.96

Finding the Fourth Proportional to 521,667.84, 719,904.60 and 306,816.96

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Solution

The fourth proportional to 521,667.84, 719,904.60 and 306,816.96 is: 423,409.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,667.84 : 719,904.60 = 306,816.96 : x
  2. Step 2: Convert to fraction form
    521,667.84/719,904.60 = 306,816.96/x
  3. Step 3: Cross multiply
    521,667.84x = 719,904.60 × 306,816.96
  4. Step 4: Simplify right side
    521,667.84x = 220,878,940,862.02
  5. Step 5: Solve for x
    x = 220,878,940,862.02/521,667.84
  6. Step 6: Final answer
    x = 423,409.16

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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.