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Finding the Fourth Proportional to 630,138.90, 944,344.35 and 404,807.70

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Solution

The fourth proportional to 630,138.90, 944,344.35 and 404,807.70 is: 606,656.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,138.90 : 944,344.35 = 404,807.70 : x
  2. Step 2: Convert to fraction form
    630,138.90/944,344.35 = 404,807.70/x
  3. Step 3: Cross multiply
    630,138.90x = 944,344.35 × 404,807.70
  4. Step 4: Simplify right side
    630,138.90x = 382,277,864,331.50
  5. Step 5: Solve for x
    x = 382,277,864,331.50/630,138.90
  6. Step 6: Final answer
    x = 606,656.51

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1.5x scale

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.