Home / 710,128.48-979,846.40-419,786.88

Finding the Fourth Proportional to 710,128.48, 979,846.40 and 419,786.88

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Solution

The fourth proportional to 710,128.48, 979,846.40 and 419,786.88 is: 579,228.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,128.48 : 979,846.40 = 419,786.88 : x
  2. Step 2: Convert to fraction form
    710,128.48/979,846.40 = 419,786.88/x
  3. Step 3: Cross multiply
    710,128.48x = 979,846.40 × 419,786.88
  4. Step 4: Simplify right side
    710,128.48x = 411,326,663,135.23
  5. Step 5: Solve for x
    x = 411,326,663,135.23/710,128.48
  6. Step 6: Final answer
    x = 579,228.51

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1.5x scale

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.