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Finding the Fourth Proportional to 630,078.52, 869,254.30 and 364,689.55

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Solution

The fourth proportional to 630,078.52, 869,254.30 and 364,689.55 is: 503,124.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,078.52 : 869,254.30 = 364,689.55 : x
  2. Step 2: Convert to fraction form
    630,078.52/869,254.30 = 364,689.55/x
  3. Step 3: Cross multiply
    630,078.52x = 869,254.30 × 364,689.55
  4. Step 4: Simplify right side
    630,078.52x = 317,007,956,155.44
  5. Step 5: Solve for x
    x = 317,007,956,155.44/630,078.52
  6. Step 6: Final answer
    x = 503,124.53

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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.