Home / 917,130.31-1,265,578.15-509,211.07

Finding the Fourth Proportional to 917,130.31, 1,265,578.15 and 509,211.07

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Solution

The fourth proportional to 917,130.31, 1,265,578.15 and 509,211.07 is: 702,677.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,130.31 : 1,265,578.15 = 509,211.07 : x
  2. Step 2: Convert to fraction form
    917,130.31/1,265,578.15 = 509,211.07/x
  3. Step 3: Cross multiply
    917,130.31x = 1,265,578.15 × 509,211.07
  4. Step 4: Simplify right side
    917,130.31x = 644,446,403,930.12
  5. Step 5: Solve for x
    x = 644,446,403,930.12/917,130.31
  6. Step 6: Final answer
    x = 702,677.03

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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.