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Finding the Fourth Proportional to 630,998.92, 870,800.34 and 359,107.48

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Solution

The fourth proportional to 630,998.92, 870,800.34 and 359,107.48 is: 495,580.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,998.92 : 870,800.34 = 359,107.48 : x
  2. Step 2: Convert to fraction form
    630,998.92/870,800.34 = 359,107.48/x
  3. Step 3: Cross multiply
    630,998.92x = 870,800.34 × 359,107.48
  4. Step 4: Simplify right side
    630,998.92x = 312,710,915,680.54
  5. Step 5: Solve for x
    x = 312,710,915,680.54/630,998.92
  6. Step 6: Final answer
    x = 495,580.75

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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.