Home / 431,626,830.40-647,440,245.60-300,112,897.60

Finding the Fourth Proportional to 431,626,830.40, 647,440,245.60 and 300,112,897.60

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Solution

The fourth proportional to 431,626,830.40, 647,440,245.60 and 300,112,897.60 is: 450,169,346.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,626,830.40 : 647,440,245.60 = 300,112,897.60 : x
  2. Step 2: Convert to fraction form
    431,626,830.40/647,440,245.60 = 300,112,897.60/x
  3. Step 3: Cross multiply
    431,626,830.40x = 647,440,245.60 × 300,112,897.60
  4. Step 4: Simplify right side
    431,626,830.40x = 194,305,168,129,871,680
  5. Step 5: Solve for x
    x = 194,305,168,129,871,680/431,626,830.40
  6. Step 6: Final answer
    x = 450,169,346.40

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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.