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Finding the Fourth Proportional to 590,804.84, 815,404.26 and 375,720.68

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Solution

The fourth proportional to 590,804.84, 815,404.26 and 375,720.68 is: 518,554.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,804.84 : 815,404.26 = 375,720.68 : x
  2. Step 2: Convert to fraction form
    590,804.84/815,404.26 = 375,720.68/x
  3. Step 3: Cross multiply
    590,804.84x = 815,404.26 × 375,720.68
  4. Step 4: Simplify right side
    590,804.84x = 306,364,243,042.10
  5. Step 5: Solve for x
    x = 306,364,243,042.10/590,804.84
  6. Step 6: Final answer
    x = 518,554.05

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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.