Home / 645,743,138.40-971,165,624.40-579,419,301.60

Finding the Fourth Proportional to 645,743,138.40, 971,165,624.40 and 579,419,301.60

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Solution

The fourth proportional to 645,743,138.40, 971,165,624.40 and 579,419,301.60 is: 871,417,866.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,743,138.40 : 971,165,624.40 = 579,419,301.60 : x
  2. Step 2: Convert to fraction form
    645,743,138.40/971,165,624.40 = 579,419,301.60/x
  3. Step 3: Cross multiply
    645,743,138.40x = 971,165,624.40 × 579,419,301.60
  4. Step 4: Simplify right side
    645,743,138.40x = 562,712,107,827,775,936
  5. Step 5: Solve for x
    x = 562,712,107,827,775,936/645,743,138.40
  6. Step 6: Final answer
    x = 871,417,866.28

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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.