Home / 858,608.80-1,287,913.20-606,666.40

Finding the Fourth Proportional to 858,608.80, 1,287,913.20 and 606,666.40

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Solution

The fourth proportional to 858,608.80, 1,287,913.20 and 606,666.40 is: 909,999.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,608.80 : 1,287,913.20 = 606,666.40 : x
  2. Step 2: Convert to fraction form
    858,608.80/1,287,913.20 = 606,666.40/x
  3. Step 3: Cross multiply
    858,608.80x = 1,287,913.20 × 606,666.40
  4. Step 4: Simplify right side
    858,608.80x = 781,333,664,556.48
  5. Step 5: Solve for x
    x = 781,333,664,556.48/858,608.80
  6. Step 6: Final answer
    x = 909,999.60

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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.