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Finding the Fourth Proportional to 630,488.52, 870,065.04 and 344,002.80

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Solution

The fourth proportional to 630,488.52, 870,065.04 and 344,002.80 is: 474,718.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,488.52 : 870,065.04 = 344,002.80 : x
  2. Step 2: Convert to fraction form
    630,488.52/870,065.04 = 344,002.80/x
  3. Step 3: Cross multiply
    630,488.52x = 870,065.04 × 344,002.80
  4. Step 4: Simplify right side
    630,488.52x = 299,304,809,942.11
  5. Step 5: Solve for x
    x = 299,304,809,942.11/630,488.52
  6. Step 6: Final answer
    x = 474,718.89

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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.