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Finding the Fourth Proportional to 579,715.30, 869,184.15 and 264,009.70

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Solution

The fourth proportional to 579,715.30, 869,184.15 and 264,009.70 is: 395,837.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,715.30 : 869,184.15 = 264,009.70 : x
  2. Step 2: Convert to fraction form
    579,715.30/869,184.15 = 264,009.70/x
  3. Step 3: Cross multiply
    579,715.30x = 869,184.15 × 264,009.70
  4. Step 4: Simplify right side
    579,715.30x = 229,473,046,686.26
  5. Step 5: Solve for x
    x = 229,473,046,686.26/579,715.30
  6. Step 6: Final answer
    x = 395,837.49

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Double scale
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Similar ratio
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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.