Home / 755,768.40-1,128,123.09-666,090.87

Finding the Fourth Proportional to 755,768.40, 1,128,123.09 and 666,090.87

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Solution

The fourth proportional to 755,768.40, 1,128,123.09 and 666,090.87 is: 994,262.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    755,768.40 : 1,128,123.09 = 666,090.87 : x
  2. Step 2: Convert to fraction form
    755,768.40/1,128,123.09 = 666,090.87/x
  3. Step 3: Cross multiply
    755,768.40x = 1,128,123.09 × 666,090.87
  4. Step 4: Simplify right side
    755,768.40x = 751,432,490,485.19
  5. Step 5: Solve for x
    x = 751,432,490,485.19/755,768.40
  6. Step 6: Final answer
    x = 994,262.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.