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Finding the Fourth Proportional to 671,445.91, 926,540.53 and 369,639.91

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Solution

The fourth proportional to 671,445.91, 926,540.53 and 369,639.91 is: 510,072.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,445.91 : 926,540.53 = 369,639.91 : x
  2. Step 2: Convert to fraction form
    671,445.91/926,540.53 = 369,639.91/x
  3. Step 3: Cross multiply
    671,445.91x = 926,540.53 × 369,639.91
  4. Step 4: Simplify right side
    671,445.91x = 342,486,358,120.55
  5. Step 5: Solve for x
    x = 342,486,358,120.55/671,445.91
  6. Step 6: Final answer
    x = 510,072.89

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1.5x scale

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.