Home / 970,400.40-1,455,211.80-338,989.20

Finding the Fourth Proportional to 970,400.40, 1,455,211.80 and 338,989.20

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Solution

The fourth proportional to 970,400.40, 1,455,211.80 and 338,989.20 is: 508,347.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    970,400.40 : 1,455,211.80 = 338,989.20 : x
  2. Step 2: Convert to fraction form
    970,400.40/1,455,211.80 = 338,989.20/x
  3. Step 3: Cross multiply
    970,400.40x = 1,455,211.80 × 338,989.20
  4. Step 4: Simplify right side
    970,400.40x = 493,301,083,912.56
  5. Step 5: Solve for x
    x = 493,301,083,912.56/970,400.40
  6. Step 6: Final answer
    x = 508,347.98

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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.