Home / 662,724.64-914,516.43-390,779.38

Finding the Fourth Proportional to 662,724.64, 914,516.43 and 390,779.38

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Solution

The fourth proportional to 662,724.64, 914,516.43 and 390,779.38 is: 539,249.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,724.64 : 914,516.43 = 390,779.38 : x
  2. Step 2: Convert to fraction form
    662,724.64/914,516.43 = 390,779.38/x
  3. Step 3: Cross multiply
    662,724.64x = 914,516.43 × 390,779.38
  4. Step 4: Simplify right side
    662,724.64x = 357,374,163,515.21
  5. Step 5: Solve for x
    x = 357,374,163,515.21/662,724.64
  6. Step 6: Final answer
    x = 539,249.85

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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.