Home / 917,367.31-1,265,983.86-509,506.93

Finding the Fourth Proportional to 917,367.31, 1,265,983.86 and 509,506.93

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Solution

The fourth proportional to 917,367.31, 1,265,983.86 and 509,506.93 is: 703,128.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,367.31 : 1,265,983.86 = 509,506.93 : x
  2. Step 2: Convert to fraction form
    917,367.31/1,265,983.86 = 509,506.93/x
  3. Step 3: Cross multiply
    917,367.31x = 1,265,983.86 × 509,506.93
  4. Step 4: Simplify right side
    917,367.31x = 645,027,549,938.15
  5. Step 5: Solve for x
    x = 645,027,549,938.15/917,367.31
  6. Step 6: Final answer
    x = 703,128.99

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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.