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Finding the Fourth Proportional to 679,953,619.20, 1,019,930,428.80 and 532,000,444.80

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Solution

The fourth proportional to 679,953,619.20, 1,019,930,428.80 and 532,000,444.80 is: 798,000,667.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,953,619.20 : 1,019,930,428.80 = 532,000,444.80 : x
  2. Step 2: Convert to fraction form
    679,953,619.20/1,019,930,428.80 = 532,000,444.80/x
  3. Step 3: Cross multiply
    679,953,619.20x = 1,019,930,428.80 × 532,000,444.80
  4. Step 4: Simplify right side
    679,953,619.20x = 542,603,441,786,654,720
  5. Step 5: Solve for x
    x = 542,603,441,786,654,720/679,953,619.20
  6. Step 6: Final answer
    x = 798,000,667.20

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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.