Home / 623,429.68-859,758.86-393,587.59

Finding the Fourth Proportional to 623,429.68, 859,758.86 and 393,587.59

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Solution

The fourth proportional to 623,429.68, 859,758.86 and 393,587.59 is: 542,788.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,429.68 : 859,758.86 = 393,587.59 : x
  2. Step 2: Convert to fraction form
    623,429.68/859,758.86 = 393,587.59/x
  3. Step 3: Cross multiply
    623,429.68x = 859,758.86 × 393,587.59
  4. Step 4: Simplify right side
    623,429.68x = 338,390,415,921.24
  5. Step 5: Solve for x
    x = 338,390,415,921.24/623,429.68
  6. Step 6: Final answer
    x = 542,788.43

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Double scale
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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.