Home / 808,617.20-1,212,925.80-509,435.60

Finding the Fourth Proportional to 808,617.20, 1,212,925.80 and 509,435.60

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Solution

The fourth proportional to 808,617.20, 1,212,925.80 and 509,435.60 is: 764,153.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,617.20 : 1,212,925.80 = 509,435.60 : x
  2. Step 2: Convert to fraction form
    808,617.20/1,212,925.80 = 509,435.60/x
  3. Step 3: Cross multiply
    808,617.20x = 1,212,925.80 × 509,435.60
  4. Step 4: Simplify right side
    808,617.20x = 617,907,582,678.48
  5. Step 5: Solve for x
    x = 617,907,582,678.48/808,617.20
  6. Step 6: Final answer
    x = 764,153.40

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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.