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Finding the Fourth Proportional to 606,605.58, 909,170.46 and 429,163.74

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Solution

The fourth proportional to 606,605.58, 909,170.46 and 429,163.74 is: 643,223.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,605.58 : 909,170.46 = 429,163.74 : x
  2. Step 2: Convert to fraction form
    606,605.58/909,170.46 = 429,163.74/x
  3. Step 3: Cross multiply
    606,605.58x = 909,170.46 × 429,163.74
  4. Step 4: Simplify right side
    606,605.58x = 390,182,994,911.12
  5. Step 5: Solve for x
    x = 390,182,994,911.12/606,605.58
  6. Step 6: Final answer
    x = 643,223.55

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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.