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Finding the Fourth Proportional to 660,256.88, 911,159.16 and 358,450.88

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Solution

The fourth proportional to 660,256.88, 911,159.16 and 358,450.88 is: 494,664.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,256.88 : 911,159.16 = 358,450.88 : x
  2. Step 2: Convert to fraction form
    660,256.88/911,159.16 = 358,450.88/x
  3. Step 3: Cross multiply
    660,256.88x = 911,159.16 × 358,450.88
  4. Step 4: Simplify right side
    660,256.88x = 326,605,802,722.06
  5. Step 5: Solve for x
    x = 326,605,802,722.06/660,256.88
  6. Step 6: Final answer
    x = 494,664.75

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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.