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Finding the Fourth Proportional to 579,984.80, 869,977.20 and 556,656.80

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Solution

The fourth proportional to 579,984.80, 869,977.20 and 556,656.80 is: 834,985.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,984.80 : 869,977.20 = 556,656.80 : x
  2. Step 2: Convert to fraction form
    579,984.80/869,977.20 = 556,656.80/x
  3. Step 3: Cross multiply
    579,984.80x = 869,977.20 × 556,656.80
  4. Step 4: Simplify right side
    579,984.80x = 484,278,724,224.96
  5. Step 5: Solve for x
    x = 484,278,724,224.96/579,984.80
  6. Step 6: Final answer
    x = 834,985.20

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Double scale
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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.