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Finding the Fourth Proportional to 608,853.86, 909,547.38 and 438,923.96

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Solution

The fourth proportional to 608,853.86, 909,547.38 and 438,923.96 is: 655,694.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,853.86 : 909,547.38 = 438,923.96 : x
  2. Step 2: Convert to fraction form
    608,853.86/909,547.38 = 438,923.96/x
  3. Step 3: Cross multiply
    608,853.86x = 909,547.38 × 438,923.96
  4. Step 4: Simplify right side
    608,853.86x = 399,222,137,837.23
  5. Step 5: Solve for x
    x = 399,222,137,837.23/608,853.86
  6. Step 6: Final answer
    x = 655,694.52

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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.