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Finding the Fourth Proportional to 630,592.34, 870,235.82 and 344,130.88

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Solution

The fourth proportional to 630,592.34, 870,235.82 and 344,130.88 is: 474,910.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,592.34 : 870,235.82 = 344,130.88 : x
  2. Step 2: Convert to fraction form
    630,592.34/870,235.82 = 344,130.88/x
  3. Step 3: Cross multiply
    630,592.34x = 870,235.82 × 344,130.88
  4. Step 4: Simplify right side
    630,592.34x = 299,475,018,544.12
  5. Step 5: Solve for x
    x = 299,475,018,544.12/630,592.34
  6. Step 6: Final answer
    x = 474,910.65

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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.