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Finding the Fourth Proportional to 630,957.38, 870,716.69 and 344,477.46

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Solution

The fourth proportional to 630,957.38, 870,716.69 and 344,477.46 is: 475,376.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,957.38 : 870,716.69 = 344,477.46 : x
  2. Step 2: Convert to fraction form
    630,957.38/870,716.69 = 344,477.46/x
  3. Step 3: Cross multiply
    630,957.38x = 870,716.69 × 344,477.46
  4. Step 4: Simplify right side
    630,957.38x = 299,942,273,750.81
  5. Step 5: Solve for x
    x = 299,942,273,750.81/630,957.38
  6. Step 6: Final answer
    x = 475,376.44

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Half scale
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Double scale
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Similar ratio
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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.