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Finding the Fourth Proportional to 630,465.60, 870,266.94 and 372,343.56

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Solution

The fourth proportional to 630,465.60, 870,266.94 and 372,343.56 is: 513,966.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,465.60 : 870,266.94 = 372,343.56 : x
  2. Step 2: Convert to fraction form
    630,465.60/870,266.94 = 372,343.56/x
  3. Step 3: Cross multiply
    630,465.60x = 870,266.94 × 372,343.56
  4. Step 4: Simplify right side
    630,465.60x = 324,038,290,589.91
  5. Step 5: Solve for x
    x = 324,038,290,589.91/630,465.60
  6. Step 6: Final answer
    x = 513,966.65

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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.