Home / 917,256.56-1,265,789.52-509,347.76

Finding the Fourth Proportional to 917,256.56, 1,265,789.52 and 509,347.76

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Solution

The fourth proportional to 917,256.56, 1,265,789.52 and 509,347.76 is: 702,886.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,256.56 : 1,265,789.52 = 509,347.76 : x
  2. Step 2: Convert to fraction form
    917,256.56/1,265,789.52 = 509,347.76/x
  3. Step 3: Cross multiply
    917,256.56x = 1,265,789.52 × 509,347.76
  4. Step 4: Simplify right side
    917,256.56x = 644,727,056,643.48
  5. Step 5: Solve for x
    x = 644,727,056,643.48/917,256.56
  6. Step 6: Final answer
    x = 702,886.29

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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.