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Finding the Fourth Proportional to 406,318.79, 607,007.29 and 262,996.47

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Solution

The fourth proportional to 406,318.79, 607,007.29 and 262,996.47 is: 392,895.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,318.79 : 607,007.29 = 262,996.47 : x
  2. Step 2: Convert to fraction form
    406,318.79/607,007.29 = 262,996.47/x
  3. Step 3: Cross multiply
    406,318.79x = 607,007.29 × 262,996.47
  4. Step 4: Simplify right side
    406,318.79x = 159,640,774,534.27
  5. Step 5: Solve for x
    x = 159,640,774,534.27/406,318.79
  6. Step 6: Final answer
    x = 392,895.38

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.