Home / 917,709.40-1,376,564.10-728,752.60

Finding the Fourth Proportional to 917,709.40, 1,376,564.10 and 728,752.60

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Solution

The fourth proportional to 917,709.40, 1,376,564.10 and 728,752.60 is: 1,093,128.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,709.40 : 1,376,564.10 = 728,752.60 : x
  2. Step 2: Convert to fraction form
    917,709.40/1,376,564.10 = 728,752.60/x
  3. Step 3: Cross multiply
    917,709.40x = 1,376,564.10 × 728,752.60
  4. Step 4: Simplify right side
    917,709.40x = 1,003,174,666,941.66
  5. Step 5: Solve for x
    x = 1,003,174,666,941.66/917,709.40
  6. Step 6: Final answer
    x = 1,093,128.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.