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Finding the Fourth Proportional to 579,481.40, 868,530.90 and 242,521.40

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Solution

The fourth proportional to 579,481.40, 868,530.90 and 242,521.40 is: 363,492.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,481.40 : 868,530.90 = 242,521.40 : x
  2. Step 2: Convert to fraction form
    579,481.40/868,530.90 = 242,521.40/x
  3. Step 3: Cross multiply
    579,481.40x = 868,530.90 × 242,521.40
  4. Step 4: Simplify right side
    579,481.40x = 210,637,329,811.26
  5. Step 5: Solve for x
    x = 210,637,329,811.26/579,481.40
  6. Step 6: Final answer
    x = 363,492.82

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.