Home / 1,315,980.40-1,971,346.20-754,358.80

Finding the Fourth Proportional to 1,315,980.40, 1,971,346.20 and 754,358.80

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Solution

The fourth proportional to 1,315,980.40, 1,971,346.20 and 754,358.80 is: 1,130,033.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,980.40 : 1,971,346.20 = 754,358.80 : x
  2. Step 2: Convert to fraction form
    1,315,980.40/1,971,346.20 = 754,358.80/x
  3. Step 3: Cross multiply
    1,315,980.40x = 1,971,346.20 × 754,358.80
  4. Step 4: Simplify right side
    1,315,980.40x = 1,487,102,353,816.56
  5. Step 5: Solve for x
    x = 1,487,102,353,816.56/1,315,980.40
  6. Step 6: Final answer
    x = 1,130,033.82

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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.