Home / 387,973,678.56-582,217,548.11-213,218,751.18

Finding the Fourth Proportional to 387,973,678.56, 582,217,548.11 and 213,218,751.18

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Solution

The fourth proportional to 387,973,678.56, 582,217,548.11 and 213,218,751.18 is: 319,969,382.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,973,678.56 : 582,217,548.11 = 213,218,751.18 : x
  2. Step 2: Convert to fraction form
    387,973,678.56/582,217,548.11 = 213,218,751.18/x
  3. Step 3: Cross multiply
    387,973,678.56x = 582,217,548.11 × 213,218,751.18
  4. Step 4: Simplify right side
    387,973,678.56x = 124,139,698,523,095,776
  5. Step 5: Solve for x
    x = 124,139,698,523,095,776/387,973,678.56
  6. Step 6: Final answer
    x = 319,969,382.93

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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.