Home / 909,990.60-1,364,985.90-278,822.40

Finding the Fourth Proportional to 909,990.60, 1,364,985.90 and 278,822.40

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Solution

The fourth proportional to 909,990.60, 1,364,985.90 and 278,822.40 is: 418,233.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,990.60 : 1,364,985.90 = 278,822.40 : x
  2. Step 2: Convert to fraction form
    909,990.60/1,364,985.90 = 278,822.40/x
  3. Step 3: Cross multiply
    909,990.60x = 1,364,985.90 × 278,822.40
  4. Step 4: Simplify right side
    909,990.60x = 380,588,644,604.16
  5. Step 5: Solve for x
    x = 380,588,644,604.16/909,990.60
  6. Step 6: Final answer
    x = 418,233.60

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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.