Home / 917,077.50-1,265,606.46-509,179.36

Finding the Fourth Proportional to 917,077.50, 1,265,606.46 and 509,179.36

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Solution

The fourth proportional to 917,077.50, 1,265,606.46 and 509,179.36 is: 702,689.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,077.50 : 1,265,606.46 = 509,179.36 : x
  2. Step 2: Convert to fraction form
    917,077.50/1,265,606.46 = 509,179.36/x
  3. Step 3: Cross multiply
    917,077.50x = 1,265,606.46 × 509,179.36
  4. Step 4: Simplify right side
    917,077.50x = 644,420,687,314.67
  5. Step 5: Solve for x
    x = 644,420,687,314.67/917,077.50
  6. Step 6: Final answer
    x = 702,689.45

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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.