Home / 696,675.60-961,519.32-390,875.76

Finding the Fourth Proportional to 696,675.60, 961,519.32 and 390,875.76

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Solution

The fourth proportional to 696,675.60, 961,519.32 and 390,875.76 is: 539,468.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,675.60 : 961,519.32 = 390,875.76 : x
  2. Step 2: Convert to fraction form
    696,675.60/961,519.32 = 390,875.76/x
  3. Step 3: Cross multiply
    696,675.60x = 961,519.32 × 390,875.76
  4. Step 4: Simplify right side
    696,675.60x = 375,834,594,959.68
  5. Step 5: Solve for x
    x = 375,834,594,959.68/696,675.60
  6. Step 6: Final answer
    x = 539,468.58

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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.