Home / 389,168,678.66-537,052,759.52-212,956,688.57

Finding the Fourth Proportional to 389,168,678.66, 537,052,759.52 and 212,956,688.57

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Solution

The fourth proportional to 389,168,678.66, 537,052,759.52 and 212,956,688.57 is: 293,880,220.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,168,678.66 : 537,052,759.52 = 212,956,688.57 : x
  2. Step 2: Convert to fraction form
    389,168,678.66/537,052,759.52 = 212,956,688.57/x
  3. Step 3: Cross multiply
    389,168,678.66x = 537,052,759.52 × 212,956,688.57
  4. Step 4: Simplify right side
    389,168,678.66x = 114,368,977,251,009,696
  5. Step 5: Solve for x
    x = 114,368,977,251,009,696/389,168,678.66
  6. Step 6: Final answer
    x = 293,880,220.90

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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.