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Finding the Fourth Proportional to 630,538.80, 870,164.55 and 344,074.61

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Solution

The fourth proportional to 630,538.80, 870,164.55 and 344,074.61 is: 474,834.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,538.80 : 870,164.55 = 344,074.61 : x
  2. Step 2: Convert to fraction form
    630,538.80/870,164.55 = 344,074.61/x
  3. Step 3: Cross multiply
    630,538.80x = 870,164.55 × 344,074.61
  4. Step 4: Simplify right side
    630,538.80x = 299,401,523,826.25
  5. Step 5: Solve for x
    x = 299,401,523,826.25/630,538.80
  6. Step 6: Final answer
    x = 474,834.42

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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.