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Finding the Fourth Proportional to 579,628.80, 869,443.20 and 534,009.60

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Solution

The fourth proportional to 579,628.80, 869,443.20 and 534,009.60 is: 801,014.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,628.80 : 869,443.20 = 534,009.60 : x
  2. Step 2: Convert to fraction form
    579,628.80/869,443.20 = 534,009.60/x
  3. Step 3: Cross multiply
    579,628.80x = 869,443.20 × 534,009.60
  4. Step 4: Simplify right side
    579,628.80x = 464,291,015,454.72
  5. Step 5: Solve for x
    x = 464,291,015,454.72/579,628.80
  6. Step 6: Final answer
    x = 801,014.40

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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.