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Finding the Fourth Proportional to 620,101, 855,687 and 375,177.01

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Solution

The fourth proportional to 620,101, 855,687 and 375,177.01 is: 517,712.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,101 : 855,687 = 375,177.01 : x
  2. Step 2: Convert to fraction form
    620,101/855,687 = 375,177.01/x
  3. Step 3: Cross multiply
    620,101x = 855,687 × 375,177.01
  4. Step 4: Simplify right side
    620,101x = 321,034,090,155.87
  5. Step 5: Solve for x
    x = 321,034,090,155.87/620,101
  6. Step 6: Final answer
    x = 517,712.58

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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.