Home / 513,863,317.71-709,112,373.09-278,908,979.67

Finding the Fourth Proportional to 513,863,317.71, 709,112,373.09 and 278,908,979.67

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Solution

The fourth proportional to 513,863,317.71, 709,112,373.09 and 278,908,979.67 is: 384,884,076.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,863,317.71 : 709,112,373.09 = 278,908,979.67 : x
  2. Step 2: Convert to fraction form
    513,863,317.71/709,112,373.09 = 278,908,979.67/x
  3. Step 3: Cross multiply
    513,863,317.71x = 709,112,373.09 × 278,908,979.67
  4. Step 4: Simplify right side
    513,863,317.71x = 197,777,808,449,904,288
  5. Step 5: Solve for x
    x = 197,777,808,449,904,288/513,863,317.71
  6. Step 6: Final answer
    x = 384,884,076.43

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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.