Home / 513,988,189.20-709,316,037.72-279,048,751.92

Finding the Fourth Proportional to 513,988,189.20, 709,316,037.72 and 279,048,751.92

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Solution

The fourth proportional to 513,988,189.20, 709,316,037.72 and 279,048,751.92 is: 385,093,975.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,988,189.20 : 709,316,037.72 = 279,048,751.92 : x
  2. Step 2: Convert to fraction form
    513,988,189.20/709,316,037.72 = 279,048,751.92/x
  3. Step 3: Cross multiply
    513,988,189.20x = 709,316,037.72 × 279,048,751.92
  4. Step 4: Simplify right side
    513,988,189.20x = 197,933,755,042,605,664
  5. Step 5: Solve for x
    x = 197,933,755,042,605,664/513,988,189.20
  6. Step 6: Final answer
    x = 385,093,975.31

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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.