Home / 28,678,630.40-43,017,945.60-28,479,564.80

Finding the Fourth Proportional to 28,678,630.40, 43,017,945.60 and 28,479,564.80

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Solution

The fourth proportional to 28,678,630.40, 43,017,945.60 and 28,479,564.80 is: 42,719,347.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,678,630.40 : 43,017,945.60 = 28,479,564.80 : x
  2. Step 2: Convert to fraction form
    28,678,630.40/43,017,945.60 = 28,479,564.80/x
  3. Step 3: Cross multiply
    28,678,630.40x = 43,017,945.60 × 28,479,564.80
  4. Step 4: Simplify right side
    28,678,630.40x = 1,225,132,369,278,075
  5. Step 5: Solve for x
    x = 1,225,132,369,278,075/28,678,630.40
  6. Step 6: Final answer
    x = 42,719,347.20

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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.