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Finding the Fourth Proportional to 652,893,011.20, 978,064,058.40 and 393,337,226.80

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Solution

The fourth proportional to 652,893,011.20, 978,064,058.40 and 393,337,226.80 is: 589,237,436.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,893,011.20 : 978,064,058.40 = 393,337,226.80 : x
  2. Step 2: Convert to fraction form
    652,893,011.20/978,064,058.40 = 393,337,226.80/x
  3. Step 3: Cross multiply
    652,893,011.20x = 978,064,058.40 × 393,337,226.80
  4. Step 4: Simplify right side
    652,893,011.20x = 384,709,004,363,809,216
  5. Step 5: Solve for x
    x = 384,709,004,363,809,216/652,893,011.20
  6. Step 6: Final answer
    x = 589,237,436.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.