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Finding the Fourth Proportional to 630,600.94, 870,247.74 and 344,139.40

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Solution

The fourth proportional to 630,600.94, 870,247.74 and 344,139.40 is: 474,922.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,600.94 : 870,247.74 = 344,139.40 : x
  2. Step 2: Convert to fraction form
    630,600.94/870,247.74 = 344,139.40/x
  3. Step 3: Cross multiply
    630,600.94x = 870,247.74 × 344,139.40
  4. Step 4: Simplify right side
    630,600.94x = 299,486,535,094.96
  5. Step 5: Solve for x
    x = 299,486,535,094.96/630,600.94
  6. Step 6: Final answer
    x = 474,922.44

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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.