Home / 1,280,782.34-1,920,890.53-369,766.91

Finding the Fourth Proportional to 1,280,782.34, 1,920,890.53 and 369,766.91

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Solution

The fourth proportional to 1,280,782.34, 1,920,890.53 and 369,766.91 is: 554,568.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,782.34 : 1,920,890.53 = 369,766.91 : x
  2. Step 2: Convert to fraction form
    1,280,782.34/1,920,890.53 = 369,766.91/x
  3. Step 3: Cross multiply
    1,280,782.34x = 1,920,890.53 × 369,766.91
  4. Step 4: Simplify right side
    1,280,782.34x = 710,281,760,990.80
  5. Step 5: Solve for x
    x = 710,281,760,990.80/1,280,782.34
  6. Step 6: Final answer
    x = 554,568.67

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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.