Home / 717,400.36-982,842.77-690,495.40

Finding the Fourth Proportional to 717,400.36, 982,842.77 and 690,495.40

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Solution

The fourth proportional to 717,400.36, 982,842.77 and 690,495.40 is: 945,982.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,400.36 : 982,842.77 = 690,495.40 : x
  2. Step 2: Convert to fraction form
    717,400.36/982,842.77 = 690,495.40/x
  3. Step 3: Cross multiply
    717,400.36x = 982,842.77 × 690,495.40
  4. Step 4: Simplify right side
    717,400.36x = 678,648,411,608.26
  5. Step 5: Solve for x
    x = 678,648,411,608.26/717,400.36
  6. Step 6: Final answer
    x = 945,982.81

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.