Home / 696,592.28-961,339.26-390,686.72

Finding the Fourth Proportional to 696,592.28, 961,339.26 and 390,686.72

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Solution

The fourth proportional to 696,592.28, 961,339.26 and 390,686.72 is: 539,171.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,592.28 : 961,339.26 = 390,686.72 : x
  2. Step 2: Convert to fraction form
    696,592.28/961,339.26 = 390,686.72/x
  3. Step 3: Cross multiply
    696,592.28x = 961,339.26 × 390,686.72
  4. Step 4: Simplify right side
    696,592.28x = 375,582,482,296.63
  5. Step 5: Solve for x
    x = 375,582,482,296.63/696,592.28
  6. Step 6: Final answer
    x = 539,171.18

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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.