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Finding the Fourth Proportional to 607,260, 838,018.80 and 338,988

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Solution

The fourth proportional to 607,260, 838,018.80 and 338,988 is: 467,803.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,260 : 838,018.80 = 338,988 : x
  2. Step 2: Convert to fraction form
    607,260/838,018.80 = 338,988/x
  3. Step 3: Cross multiply
    607,260x = 838,018.80 × 338,988
  4. Step 4: Simplify right side
    607,260x = 284,078,316,974.40
  5. Step 5: Solve for x
    x = 284,078,316,974.40/607,260
  6. Step 6: Final answer
    x = 467,803.44

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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.