Home / 831,675.48-1,147,430.25-678,448.79

Finding the Fourth Proportional to 831,675.48, 1,147,430.25 and 678,448.79

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Solution

The fourth proportional to 831,675.48, 1,147,430.25 and 678,448.79 is: 936,029.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,675.48 : 1,147,430.25 = 678,448.79 : x
  2. Step 2: Convert to fraction form
    831,675.48/1,147,430.25 = 678,448.79/x
  3. Step 3: Cross multiply
    831,675.48x = 1,147,430.25 × 678,448.79
  4. Step 4: Simplify right side
    831,675.48x = 778,472,666,418.02
  5. Step 5: Solve for x
    x = 778,472,666,418.02/831,675.48
  6. Step 6: Final answer
    x = 936,029.36

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.