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Finding the Fourth Proportional to 630,892.89, 870,620.67 and 358,954.83

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Solution

The fourth proportional to 630,892.89, 870,620.67 and 358,954.83 is: 495,351.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,892.89 : 870,620.67 = 358,954.83 : x
  2. Step 2: Convert to fraction form
    630,892.89/870,620.67 = 358,954.83/x
  3. Step 3: Cross multiply
    630,892.89x = 870,620.67 × 358,954.83
  4. Step 4: Simplify right side
    630,892.89x = 312,513,494,594.34
  5. Step 5: Solve for x
    x = 312,513,494,594.34/630,892.89
  6. Step 6: Final answer
    x = 495,351.11

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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.