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Finding the Fourth Proportional to 630,231.36, 869,792.79 and 358,339.98

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Solution

The fourth proportional to 630,231.36, 869,792.79 and 358,339.98 is: 494,550.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,231.36 : 869,792.79 = 358,339.98 : x
  2. Step 2: Convert to fraction form
    630,231.36/869,792.79 = 358,339.98/x
  3. Step 3: Cross multiply
    630,231.36x = 869,792.79 × 358,339.98
  4. Step 4: Simplify right side
    630,231.36x = 311,681,530,972.74
  5. Step 5: Solve for x
    x = 311,681,530,972.74/630,231.36
  6. Step 6: Final answer
    x = 494,550.97

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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.