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Finding the Fourth Proportional to 672,221.25, 927,710.28 and 370,415.25

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Solution

The fourth proportional to 672,221.25, 927,710.28 and 370,415.25 is: 511,197.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,221.25 : 927,710.28 = 370,415.25 : x
  2. Step 2: Convert to fraction form
    672,221.25/927,710.28 = 370,415.25/x
  3. Step 3: Cross multiply
    672,221.25x = 927,710.28 × 370,415.25
  4. Step 4: Simplify right side
    672,221.25x = 343,638,035,293.77
  5. Step 5: Solve for x
    x = 343,638,035,293.77/672,221.25
  6. Step 6: Final answer
    x = 511,197.82

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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.