Home / 1,302,640.80-1,955,710.80-831,415.20

Finding the Fourth Proportional to 1,302,640.80, 1,955,710.80 and 831,415.20

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Solution

The fourth proportional to 1,302,640.80, 1,955,710.80 and 831,415.20 is: 1,248,239.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,302,640.80 : 1,955,710.80 = 831,415.20 : x
  2. Step 2: Convert to fraction form
    1,302,640.80/1,955,710.80 = 831,415.20/x
  3. Step 3: Cross multiply
    1,302,640.80x = 1,955,710.80 × 831,415.20
  4. Step 4: Simplify right side
    1,302,640.80x = 1,626,007,685,924.16
  5. Step 5: Solve for x
    x = 1,626,007,685,924.16/1,302,640.80
  6. Step 6: Final answer
    x = 1,248,239.49

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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.