Home / 991,383.68-1,486,239.36-429,995.36

Finding the Fourth Proportional to 991,383.68, 1,486,239.36 and 429,995.36

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Solution

The fourth proportional to 991,383.68, 1,486,239.36 and 429,995.36 is: 644,630.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,383.68 : 1,486,239.36 = 429,995.36 : x
  2. Step 2: Convert to fraction form
    991,383.68/1,486,239.36 = 429,995.36/x
  3. Step 3: Cross multiply
    991,383.68x = 1,486,239.36 × 429,995.36
  4. Step 4: Simplify right side
    991,383.68x = 639,076,028,649.37
  5. Step 5: Solve for x
    x = 639,076,028,649.37/991,383.68
  6. Step 6: Final answer
    x = 644,630.37

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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.