Home / 5,128,257,916.67-7,077,217,101.81-2,839,390,107.85

Finding the Fourth Proportional to 5,128,257,916.67, 7,077,217,101.81 and 2,839,390,107.85

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Solution

The fourth proportional to 5,128,257,916.67, 7,077,217,101.81 and 2,839,390,107.85 is: 3,918,480,808.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128,257,916.67 : 7,077,217,101.81 = 2,839,390,107.85 : x
  2. Step 2: Convert to fraction form
    5,128,257,916.67/7,077,217,101.81 = 2,839,390,107.85/x
  3. Step 3: Cross multiply
    5,128,257,916.67x = 7,077,217,101.81 × 2,839,390,107.85
  4. Step 4: Simplify right side
    5,128,257,916.67x = 20,094,980,229,958,549,504
  5. Step 5: Solve for x
    x = 20,094,980,229,958,549,504/5,128,257,916.67
  6. Step 6: Final answer
    x = 3,918,480,808.98

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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.