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Finding the Fourth Proportional to 630,546.72, 870,173.70 and 358,653.79

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Solution

The fourth proportional to 630,546.72, 870,173.70 and 358,653.79 is: 494,953.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,546.72 : 870,173.70 = 358,653.79 : x
  2. Step 2: Convert to fraction form
    630,546.72/870,173.70 = 358,653.79/x
  3. Step 3: Cross multiply
    630,546.72x = 870,173.70 × 358,653.79
  4. Step 4: Simplify right side
    630,546.72x = 312,091,095,206.09
  5. Step 5: Solve for x
    x = 312,091,095,206.09/630,546.72
  6. Step 6: Final answer
    x = 494,953.17

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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.