Home / 389,583,213-537,641,733.86-215,742,957

Finding the Fourth Proportional to 389,583,213, 537,641,733.86 and 215,742,957

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Solution

The fourth proportional to 389,583,213, 537,641,733.86 and 215,742,957 is: 297,734,639.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,583,213 : 537,641,733.86 = 215,742,957 : x
  2. Step 2: Convert to fraction form
    389,583,213/537,641,733.86 = 215,742,957/x
  3. Step 3: Cross multiply
    389,583,213x = 537,641,733.86 × 215,742,957
  4. Step 4: Simplify right side
    389,583,213x = 115,992,417,469,563,424
  5. Step 5: Solve for x
    x = 115,992,417,469,563,424/389,583,213
  6. Step 6: Final answer
    x = 297,734,639.48

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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.