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Finding the Fourth Proportional to 556,530.55, 768,025.88 and 314,801.71

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Solution

The fourth proportional to 556,530.55, 768,025.88 and 314,801.71 is: 434,434.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,530.55 : 768,025.88 = 314,801.71 : x
  2. Step 2: Convert to fraction form
    556,530.55/768,025.88 = 314,801.71/x
  3. Step 3: Cross multiply
    556,530.55x = 768,025.88 × 314,801.71
  4. Step 4: Simplify right side
    556,530.55x = 241,775,860,348.26
  5. Step 5: Solve for x
    x = 241,775,860,348.26/556,530.55
  6. Step 6: Final answer
    x = 434,434.12

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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.