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Finding the Fourth Proportional to 630,548.90, 870,178.49 and 344,084.70

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Solution

The fourth proportional to 630,548.90, 870,178.49 and 344,084.70 is: 474,848.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,548.90 : 870,178.49 = 344,084.70 : x
  2. Step 2: Convert to fraction form
    630,548.90/870,178.49 = 344,084.70/x
  3. Step 3: Cross multiply
    630,548.90x = 870,178.49 × 344,084.70
  4. Step 4: Simplify right side
    630,548.90x = 299,415,104,678.10
  5. Step 5: Solve for x
    x = 299,415,104,678.10/630,548.90
  6. Step 6: Final answer
    x = 474,848.35

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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.