Home / 1,289,606.40-1,931,785.20-658,875.60

Finding the Fourth Proportional to 1,289,606.40, 1,931,785.20 and 658,875.60

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Solution

The fourth proportional to 1,289,606.40, 1,931,785.20 and 658,875.60 is: 986,972.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,606.40 : 1,931,785.20 = 658,875.60 : x
  2. Step 2: Convert to fraction form
    1,289,606.40/1,931,785.20 = 658,875.60/x
  3. Step 3: Cross multiply
    1,289,606.40x = 1,931,785.20 × 658,875.60
  4. Step 4: Simplify right side
    1,289,606.40x = 1,272,806,132,721.12
  5. Step 5: Solve for x
    x = 1,272,806,132,721.12/1,289,606.40
  6. Step 6: Final answer
    x = 986,972.56

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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.