Home / 420,035.60-579,597.56-256,774.23

Finding the Fourth Proportional to 420,035.60, 579,597.56 and 256,774.23

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Solution

The fourth proportional to 420,035.60, 579,597.56 and 256,774.23 is: 354,316.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,035.60 : 579,597.56 = 256,774.23 : x
  2. Step 2: Convert to fraction form
    420,035.60/579,597.56 = 256,774.23/x
  3. Step 3: Cross multiply
    420,035.60x = 579,597.56 × 256,774.23
  4. Step 4: Simplify right side
    420,035.60x = 148,825,716,857.91
  5. Step 5: Solve for x
    x = 148,825,716,857.91/420,035.60
  6. Step 6: Final answer
    x = 354,316.91

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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.