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Finding the Fourth Proportional to 616,607.48, 850,858.51 and 387,091.40

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Solution

The fourth proportional to 616,607.48, 850,858.51 and 387,091.40 is: 534,148.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,607.48 : 850,858.51 = 387,091.40 : x
  2. Step 2: Convert to fraction form
    616,607.48/850,858.51 = 387,091.40/x
  3. Step 3: Cross multiply
    616,607.48x = 850,858.51 × 387,091.40
  4. Step 4: Simplify right side
    616,607.48x = 329,360,011,837.81
  5. Step 5: Solve for x
    x = 329,360,011,837.81/616,607.48
  6. Step 6: Final answer
    x = 534,148.58

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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.