Home / 808,910,611.08-1,212,293,251.77-415,421,543.40

Finding the Fourth Proportional to 808,910,611.08, 1,212,293,251.77 and 415,421,543.40

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Solution

The fourth proportional to 808,910,611.08, 1,212,293,251.77 and 415,421,543.40 is: 622,581,440.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,910,611.08 : 1,212,293,251.77 = 415,421,543.40 : x
  2. Step 2: Convert to fraction form
    808,910,611.08/1,212,293,251.77 = 415,421,543.40/x
  3. Step 3: Cross multiply
    808,910,611.08x = 1,212,293,251.77 × 415,421,543.40
  4. Step 4: Simplify right side
    808,910,611.08x = 503,612,733,703,698,176
  5. Step 5: Solve for x
    x = 503,612,733,703,698,176/808,910,611.08
  6. Step 6: Final answer
    x = 622,581,440.77

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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.