Home / 389,583,136-537,641,627.52-215,742,880

Finding the Fourth Proportional to 389,583,136, 537,641,627.52 and 215,742,880

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Solution

The fourth proportional to 389,583,136, 537,641,627.52 and 215,742,880 is: 297,734,533.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,583,136 : 537,641,627.52 = 215,742,880 : x
  2. Step 2: Convert to fraction form
    389,583,136/537,641,627.52 = 215,742,880/x
  3. Step 3: Cross multiply
    389,583,136x = 537,641,627.52 × 215,742,880
  4. Step 4: Simplify right side
    389,583,136x = 115,992,353,129,052,048
  5. Step 5: Solve for x
    x = 115,992,353,129,052,048/389,583,136
  6. Step 6: Final answer
    x = 297,734,533.17

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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.