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Finding the Fourth Proportional to 916,646.63, 1,375,007.20 and 436,627.67

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Solution

The fourth proportional to 916,646.63, 1,375,007.20 and 436,627.67 is: 654,959.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,646.63 : 1,375,007.20 = 436,627.67 : x
  2. Step 2: Convert to fraction form
    916,646.63/1,375,007.20 = 436,627.67/x
  3. Step 3: Cross multiply
    916,646.63x = 1,375,007.20 × 436,627.67
  4. Step 4: Simplify right side
    916,646.63x = 600,366,182,002.62
  5. Step 5: Solve for x
    x = 600,366,182,002.62/916,646.63
  6. Step 6: Final answer
    x = 654,959.25

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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.