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Finding the Fourth Proportional to 630,588.84, 870,231.11 and 344,127.42

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Solution

The fourth proportional to 630,588.84, 870,231.11 and 344,127.42 is: 474,905.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,588.84 : 870,231.11 = 344,127.42 : x
  2. Step 2: Convert to fraction form
    630,588.84/870,231.11 = 344,127.42/x
  3. Step 3: Cross multiply
    630,588.84x = 870,231.11 × 344,127.42
  4. Step 4: Simplify right side
    630,588.84x = 299,470,386,688.04
  5. Step 5: Solve for x
    x = 299,470,386,688.04/630,588.84
  6. Step 6: Final answer
    x = 474,905.94

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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.