Home / 831,615.40-1,245,579.90-644,018.60

Finding the Fourth Proportional to 831,615.40, 1,245,579.90 and 644,018.60

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Solution

The fourth proportional to 831,615.40, 1,245,579.90 and 644,018.60 is: 964,600.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,615.40 : 1,245,579.90 = 644,018.60 : x
  2. Step 2: Convert to fraction form
    831,615.40/1,245,579.90 = 644,018.60/x
  3. Step 3: Cross multiply
    831,615.40x = 1,245,579.90 × 644,018.60
  4. Step 4: Simplify right side
    831,615.40x = 802,176,623,386.14
  5. Step 5: Solve for x
    x = 802,176,623,386.14/831,615.40
  6. Step 6: Final answer
    x = 964,600.49

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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.