Home / 645,933.65-890,464.56-454,352.45

Finding the Fourth Proportional to 645,933.65, 890,464.56 and 454,352.45

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Solution

The fourth proportional to 645,933.65, 890,464.56 and 454,352.45 is: 626,356.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,933.65 : 890,464.56 = 454,352.45 : x
  2. Step 2: Convert to fraction form
    645,933.65/890,464.56 = 454,352.45/x
  3. Step 3: Cross multiply
    645,933.65x = 890,464.56 × 454,352.45
  4. Step 4: Simplify right side
    645,933.65x = 404,584,750,021.85
  5. Step 5: Solve for x
    x = 404,584,750,021.85/645,933.65
  6. Step 6: Final answer
    x = 626,356.52

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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.