Home / 405,045,113.15-558,964,939.93-219,406,128.84

Finding the Fourth Proportional to 405,045,113.15, 558,964,939.93 and 219,406,128.84

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Solution

The fourth proportional to 405,045,113.15, 558,964,939.93 and 219,406,128.84 is: 302,781,911.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,045,113.15 : 558,964,939.93 = 219,406,128.84 : x
  2. Step 2: Convert to fraction form
    405,045,113.15/558,964,939.93 = 219,406,128.84/x
  3. Step 3: Cross multiply
    405,045,113.15x = 558,964,939.93 × 219,406,128.84
  4. Step 4: Simplify right side
    405,045,113.15x = 122,640,333,626,775,936
  5. Step 5: Solve for x
    x = 122,640,333,626,775,936/405,045,113.15
  6. Step 6: Final answer
    x = 302,781,911.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.