Home / 657,985.69-987,013.61-208,742.48

Finding the Fourth Proportional to 657,985.69, 987,013.61 and 208,742.48

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Solution

The fourth proportional to 657,985.69, 987,013.61 and 208,742.48 is: 313,124.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,985.69 : 987,013.61 = 208,742.48 : x
  2. Step 2: Convert to fraction form
    657,985.69/987,013.61 = 208,742.48/x
  3. Step 3: Cross multiply
    657,985.69x = 987,013.61 × 208,742.48
  4. Step 4: Simplify right side
    657,985.69x = 206,031,662,766.37
  5. Step 5: Solve for x
    x = 206,031,662,766.37/657,985.69
  6. Step 6: Final answer
    x = 313,124.84

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1.5x scale

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.