Home / 696,863.59-961,579.69-390,928.26

Finding the Fourth Proportional to 696,863.59, 961,579.69 and 390,928.26

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Solution

The fourth proportional to 696,863.59, 961,579.69 and 390,928.26 is: 539,429.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,863.59 : 961,579.69 = 390,928.26 : x
  2. Step 2: Convert to fraction form
    696,863.59/961,579.69 = 390,928.26/x
  3. Step 3: Cross multiply
    696,863.59x = 961,579.69 × 390,928.26
  4. Step 4: Simplify right side
    696,863.59x = 375,908,677,691.64
  5. Step 5: Solve for x
    x = 375,908,677,691.64/696,863.59
  6. Step 6: Final answer
    x = 539,429.36

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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.