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Finding the Fourth Proportional to 630,238.14, 870,154.52 and 484,785.63

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Solution

The fourth proportional to 630,238.14, 870,154.52 and 484,785.63 is: 669,331.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,238.14 : 870,154.52 = 484,785.63 : x
  2. Step 2: Convert to fraction form
    630,238.14/870,154.52 = 484,785.63/x
  3. Step 3: Cross multiply
    630,238.14x = 870,154.52 × 484,785.63
  4. Step 4: Simplify right side
    630,238.14x = 421,838,404,751.62
  5. Step 5: Solve for x
    x = 421,838,404,751.62/630,238.14
  6. Step 6: Final answer
    x = 669,331.76

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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.