Home / 920,838.60-1,381,474.71-289,752.21

Finding the Fourth Proportional to 920,838.60, 1,381,474.71 and 289,752.21

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Solution

The fourth proportional to 920,838.60, 1,381,474.71 and 289,752.21 is: 434,696.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,838.60 : 1,381,474.71 = 289,752.21 : x
  2. Step 2: Convert to fraction form
    920,838.60/1,381,474.71 = 289,752.21/x
  3. Step 3: Cross multiply
    920,838.60x = 1,381,474.71 × 289,752.21
  4. Step 4: Simplify right side
    920,838.60x = 400,285,350,281.61
  5. Step 5: Solve for x
    x = 400,285,350,281.61/920,838.60
  6. Step 6: Final answer
    x = 434,696.54

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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.