Home / 389,671,719.41-537,747,073.80-213,465,978.90

Finding the Fourth Proportional to 389,671,719.41, 537,747,073.80 and 213,465,978.90

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Solution

The fourth proportional to 389,671,719.41, 537,747,073.80 and 213,465,978.90 is: 294,583,106.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,671,719.41 : 537,747,073.80 = 213,465,978.90 : x
  2. Step 2: Convert to fraction form
    389,671,719.41/537,747,073.80 = 213,465,978.90/x
  3. Step 3: Cross multiply
    389,671,719.41x = 537,747,073.80 × 213,465,978.90
  4. Step 4: Simplify right side
    389,671,719.41x = 114,790,705,508,527,040
  5. Step 5: Solve for x
    x = 114,790,705,508,527,040/389,671,719.41
  6. Step 6: Final answer
    x = 294,583,106.21

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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.