Home / 917,355.96-1,265,836.60-509,402.34

Finding the Fourth Proportional to 917,355.96, 1,265,836.60 and 509,402.34

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Solution

The fourth proportional to 917,355.96, 1,265,836.60 and 509,402.34 is: 702,911.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,355.96 : 1,265,836.60 = 509,402.34 : x
  2. Step 2: Convert to fraction form
    917,355.96/1,265,836.60 = 509,402.34/x
  3. Step 3: Cross multiply
    917,355.96x = 1,265,836.60 × 509,402.34
  4. Step 4: Simplify right side
    917,355.96x = 644,820,126,097.64
  5. Step 5: Solve for x
    x = 644,820,126,097.64/917,355.96
  6. Step 6: Final answer
    x = 702,911.58

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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.