Home / 643,904.49-888,081.16-570,395.54

Finding the Fourth Proportional to 643,904.49, 888,081.16 and 570,395.54

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Solution

The fourth proportional to 643,904.49, 888,081.16 and 570,395.54 is: 786,696.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,904.49 : 888,081.16 = 570,395.54 : x
  2. Step 2: Convert to fraction form
    643,904.49/888,081.16 = 570,395.54/x
  3. Step 3: Cross multiply
    643,904.49x = 888,081.16 × 570,395.54
  4. Step 4: Simplify right side
    643,904.49x = 506,557,532,822.03
  5. Step 5: Solve for x
    x = 506,557,532,822.03/643,904.49
  6. Step 6: Final answer
    x = 786,696.69

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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.