Home / 660,400.14-911,378.31-370,014.21

Finding the Fourth Proportional to 660,400.14, 911,378.31 and 370,014.21

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Solution

The fourth proportional to 660,400.14, 911,378.31 and 370,014.21 is: 510,634.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,400.14 : 911,378.31 = 370,014.21 : x
  2. Step 2: Convert to fraction form
    660,400.14/911,378.31 = 370,014.21/x
  3. Step 3: Cross multiply
    660,400.14x = 911,378.31 × 370,014.21
  4. Step 4: Simplify right side
    660,400.14x = 337,222,925,385.79
  5. Step 5: Solve for x
    x = 337,222,925,385.79/660,400.14
  6. Step 6: Final answer
    x = 510,634.24

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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.