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Finding the Fourth Proportional to 630,034.81, 869,416.54 and 358,066.78

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Solution

The fourth proportional to 630,034.81, 869,416.54 and 358,066.78 is: 494,114.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,034.81 : 869,416.54 = 358,066.78 : x
  2. Step 2: Convert to fraction form
    630,034.81/869,416.54 = 358,066.78/x
  3. Step 3: Cross multiply
    630,034.81x = 869,416.54 × 358,066.78
  4. Step 4: Simplify right side
    630,034.81x = 311,309,177,887.83
  5. Step 5: Solve for x
    x = 311,309,177,887.83/630,034.81
  6. Step 6: Final answer
    x = 494,114.25

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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.