Home / 807,128.64-1,113,821.28-505,488.96

Finding the Fourth Proportional to 807,128.64, 1,113,821.28 and 505,488.96

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Solution

The fourth proportional to 807,128.64, 1,113,821.28 and 505,488.96 is: 697,564.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,128.64 : 1,113,821.28 = 505,488.96 : x
  2. Step 2: Convert to fraction form
    807,128.64/1,113,821.28 = 505,488.96/x
  3. Step 3: Cross multiply
    807,128.64x = 1,113,821.28 × 505,488.96
  4. Step 4: Simplify right side
    807,128.64x = 563,024,360,453.07
  5. Step 5: Solve for x
    x = 563,024,360,453.07/807,128.64
  6. Step 6: Final answer
    x = 697,564.59

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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.