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Finding the Fourth Proportional to 556,408.90, 829,613.15 and 508,905.44

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Solution

The fourth proportional to 556,408.90, 829,613.15 and 508,905.44 is: 758,784.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,408.90 : 829,613.15 = 508,905.44 : x
  2. Step 2: Convert to fraction form
    556,408.90/829,613.15 = 508,905.44/x
  3. Step 3: Cross multiply
    556,408.90x = 829,613.15 × 508,905.44
  4. Step 4: Simplify right side
    556,408.90x = 422,194,642,254.73
  5. Step 5: Solve for x
    x = 422,194,642,254.73/556,408.90
  6. Step 6: Final answer
    x = 758,784.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.