Home / 1,421,312.40-2,131,968.60-890,470.80

Finding the Fourth Proportional to 1,421,312.40, 2,131,968.60 and 890,470.80

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Solution

The fourth proportional to 1,421,312.40, 2,131,968.60 and 890,470.80 is: 1,335,706.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,312.40 : 2,131,968.60 = 890,470.80 : x
  2. Step 2: Convert to fraction form
    1,421,312.40/2,131,968.60 = 890,470.80/x
  3. Step 3: Cross multiply
    1,421,312.40x = 2,131,968.60 × 890,470.80
  4. Step 4: Simplify right side
    1,421,312.40x = 1,898,455,784,816.88
  5. Step 5: Solve for x
    x = 1,898,455,784,816.88/1,421,312.40
  6. Step 6: Final answer
    x = 1,335,706.20

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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.