Home / 1,420,430.40-2,127,880.80-857,793.60

Finding the Fourth Proportional to 1,420,430.40, 2,127,880.80 and 857,793.60

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Solution

The fourth proportional to 1,420,430.40, 2,127,880.80 and 857,793.60 is: 1,285,020.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,430.40 : 2,127,880.80 = 857,793.60 : x
  2. Step 2: Convert to fraction form
    1,420,430.40/2,127,880.80 = 857,793.60/x
  3. Step 3: Cross multiply
    1,420,430.40x = 2,127,880.80 × 857,793.60
  4. Step 4: Simplify right side
    1,420,430.40x = 1,825,282,531,802.88
  5. Step 5: Solve for x
    x = 1,825,282,531,802.88/1,420,430.40
  6. Step 6: Final answer
    x = 1,285,020.75

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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.