Home / 696,015.28-960,568.50-390,143.62

Finding the Fourth Proportional to 696,015.28, 960,568.50 and 390,143.62

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Solution

The fourth proportional to 696,015.28, 960,568.50 and 390,143.62 is: 538,435.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,015.28 : 960,568.50 = 390,143.62 : x
  2. Step 2: Convert to fraction form
    696,015.28/960,568.50 = 390,143.62/x
  3. Step 3: Cross multiply
    696,015.28x = 960,568.50 × 390,143.62
  4. Step 4: Simplify right side
    696,015.28x = 374,759,671,847.97
  5. Step 5: Solve for x
    x = 374,759,671,847.97/696,015.28
  6. Step 6: Final answer
    x = 538,435.98

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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.