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Finding the Fourth Proportional to 630,412.67, 870,042.06 and 351,038.00

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Solution

The fourth proportional to 630,412.67, 870,042.06 and 351,038.00 is: 484,472.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,412.67 : 870,042.06 = 351,038.00 : x
  2. Step 2: Convert to fraction form
    630,412.67/870,042.06 = 351,038.00/x
  3. Step 3: Cross multiply
    630,412.67x = 870,042.06 × 351,038.00
  4. Step 4: Simplify right side
    630,412.67x = 305,417,826,833.39
  5. Step 5: Solve for x
    x = 305,417,826,833.39/630,412.67
  6. Step 6: Final answer
    x = 484,472.85

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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.