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Finding the Fourth Proportional to 606,607.08, 909,172.70 and 429,165.24

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Solution

The fourth proportional to 606,607.08, 909,172.70 and 429,165.24 is: 643,225.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,607.08 : 909,172.70 = 429,165.24 : x
  2. Step 2: Convert to fraction form
    606,607.08/909,172.70 = 429,165.24/x
  3. Step 3: Cross multiply
    606,607.08x = 909,172.70 × 429,165.24
  4. Step 4: Simplify right side
    606,607.08x = 390,185,319,996.95
  5. Step 5: Solve for x
    x = 390,185,319,996.95/606,607.08
  6. Step 6: Final answer
    x = 643,225.79

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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.