Home / 696,868.11-961,585.90-390,932.75

Finding the Fourth Proportional to 696,868.11, 961,585.90 and 390,932.75

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Solution

The fourth proportional to 696,868.11, 961,585.90 and 390,932.75 is: 539,435.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,868.11 : 961,585.90 = 390,932.75 : x
  2. Step 2: Convert to fraction form
    696,868.11/961,585.90 = 390,932.75/x
  3. Step 3: Cross multiply
    696,868.11x = 961,585.90 × 390,932.75
  4. Step 4: Simplify right side
    696,868.11x = 375,915,421,674.86
  5. Step 5: Solve for x
    x = 375,915,421,674.86/696,868.11
  6. Step 6: Final answer
    x = 539,435.53

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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.