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Finding the Fourth Proportional to 638,567.06, 879,602.37 and 487,401.62

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Solution

The fourth proportional to 638,567.06, 879,602.37 and 487,401.62 is: 671,377.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,567.06 : 879,602.37 = 487,401.62 : x
  2. Step 2: Convert to fraction form
    638,567.06/879,602.37 = 487,401.62/x
  3. Step 3: Cross multiply
    638,567.06x = 879,602.37 × 487,401.62
  4. Step 4: Simplify right side
    638,567.06x = 428,719,620,093.84
  5. Step 5: Solve for x
    x = 428,719,620,093.84/638,567.06
  6. Step 6: Final answer
    x = 671,377.60

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1.5x scale

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.