Home / 643,638,667.20-965,458,000.80-579,141,412.80

Finding the Fourth Proportional to 643,638,667.20, 965,458,000.80 and 579,141,412.80

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Solution

The fourth proportional to 643,638,667.20, 965,458,000.80 and 579,141,412.80 is: 868,712,119.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,638,667.20 : 965,458,000.80 = 579,141,412.80 : x
  2. Step 2: Convert to fraction form
    643,638,667.20/965,458,000.80 = 579,141,412.80/x
  3. Step 3: Cross multiply
    643,638,667.20x = 965,458,000.80 × 579,141,412.80
  4. Step 4: Simplify right side
    643,638,667.20x = 559,136,710,582,375,488
  5. Step 5: Solve for x
    x = 559,136,710,582,375,488/643,638,667.20
  6. Step 6: Final answer
    x = 868,712,119.20

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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.