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Finding the Fourth Proportional to 679,645, 936,918.66 and 475,058.80

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Solution

The fourth proportional to 679,645, 936,918.66 and 475,058.80 is: 654,888.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,645 : 936,918.66 = 475,058.80 : x
  2. Step 2: Convert to fraction form
    679,645/936,918.66 = 475,058.80/x
  3. Step 3: Cross multiply
    679,645x = 936,918.66 × 475,058.80
  4. Step 4: Simplify right side
    679,645x = 445,091,454,317.21
  5. Step 5: Solve for x
    x = 445,091,454,317.21/679,645
  6. Step 6: Final answer
    x = 654,888.15

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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.