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Finding the Fourth Proportional to 630,588.60, 870,230.76 and 344,127.18

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Solution

The fourth proportional to 630,588.60, 870,230.76 and 344,127.18 is: 474,905.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,588.60 : 870,230.76 = 344,127.18 : x
  2. Step 2: Convert to fraction form
    630,588.60/870,230.76 = 344,127.18/x
  3. Step 3: Cross multiply
    630,588.60x = 870,230.76 × 344,127.18
  4. Step 4: Simplify right side
    630,588.60x = 299,470,057,388.06
  5. Step 5: Solve for x
    x = 299,470,057,388.06/630,588.60
  6. Step 6: Final answer
    x = 474,905.60

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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.