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Finding the Fourth Proportional to 768,142.64, 1,059,878.60 and 441,392.52

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Solution

The fourth proportional to 768,142.64, 1,059,878.60 and 441,392.52 is: 609,030.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,142.64 : 1,059,878.60 = 441,392.52 : x
  2. Step 2: Convert to fraction form
    768,142.64/1,059,878.60 = 441,392.52/x
  3. Step 3: Cross multiply
    768,142.64x = 1,059,878.60 × 441,392.52
  4. Step 4: Simplify right side
    768,142.64x = 467,822,492,053.71
  5. Step 5: Solve for x
    x = 467,822,492,053.71/768,142.64
  6. Step 6: Final answer
    x = 609,030.75

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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.