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Finding the Fourth Proportional to 525,787.20, 788,680.80 and 336,830.40

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Solution

The fourth proportional to 525,787.20, 788,680.80 and 336,830.40 is: 505,245.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,787.20 : 788,680.80 = 336,830.40 : x
  2. Step 2: Convert to fraction form
    525,787.20/788,680.80 = 336,830.40/x
  3. Step 3: Cross multiply
    525,787.20x = 788,680.80 × 336,830.40
  4. Step 4: Simplify right side
    525,787.20x = 265,651,669,336.32
  5. Step 5: Solve for x
    x = 265,651,669,336.32/525,787.20
  6. Step 6: Final answer
    x = 505,245.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.