Home / 1,389,828.80-2,084,743.20-947,460.80

Finding the Fourth Proportional to 1,389,828.80, 2,084,743.20 and 947,460.80

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Solution

The fourth proportional to 1,389,828.80, 2,084,743.20 and 947,460.80 is: 1,421,191.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,828.80 : 2,084,743.20 = 947,460.80 : x
  2. Step 2: Convert to fraction form
    1,389,828.80/2,084,743.20 = 947,460.80/x
  3. Step 3: Cross multiply
    1,389,828.80x = 2,084,743.20 × 947,460.80
  4. Step 4: Simplify right side
    1,389,828.80x = 1,975,212,460,066.56
  5. Step 5: Solve for x
    x = 1,975,212,460,066.56/1,389,828.80
  6. Step 6: Final answer
    x = 1,421,191.20

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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.