Home / 909,718.80-1,365,890.40-686,644.80

Finding the Fourth Proportional to 909,718.80, 1,365,890.40 and 686,644.80

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Solution

The fourth proportional to 909,718.80, 1,365,890.40 and 686,644.80 is: 1,030,957.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,718.80 : 1,365,890.40 = 686,644.80 : x
  2. Step 2: Convert to fraction form
    909,718.80/1,365,890.40 = 686,644.80/x
  3. Step 3: Cross multiply
    909,718.80x = 1,365,890.40 × 686,644.80
  4. Step 4: Simplify right side
    909,718.80x = 937,881,540,529.92
  5. Step 5: Solve for x
    x = 937,881,540,529.92/909,718.80
  6. Step 6: Final answer
    x = 1,030,957.63

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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.