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Finding the Fourth Proportional to 630,871.32, 870,603.72 and 344,396.18

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Solution

The fourth proportional to 630,871.32, 870,603.72 and 344,396.18 is: 475,267.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,871.32 : 870,603.72 = 344,396.18 : x
  2. Step 2: Convert to fraction form
    630,871.32/870,603.72 = 344,396.18/x
  3. Step 3: Cross multiply
    630,871.32x = 870,603.72 × 344,396.18
  4. Step 4: Simplify right side
    630,871.32x = 299,832,595,461.79
  5. Step 5: Solve for x
    x = 299,832,595,461.79/630,871.32
  6. Step 6: Final answer
    x = 475,267.44

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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.