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Finding the Fourth Proportional to 630,392.74, 869,937.92 and 358,460.64

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Solution

The fourth proportional to 630,392.74, 869,937.92 and 358,460.64 is: 494,673.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,392.74 : 869,937.92 = 358,460.64 : x
  2. Step 2: Convert to fraction form
    630,392.74/869,937.92 = 358,460.64/x
  3. Step 3: Cross multiply
    630,392.74x = 869,937.92 × 358,460.64
  4. Step 4: Simplify right side
    630,392.74x = 311,838,505,131.73
  5. Step 5: Solve for x
    x = 311,838,505,131.73/630,392.74
  6. Step 6: Final answer
    x = 494,673.37

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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.