Home / 530,617,391.80-732,242,192.43-289,215,447.28

Finding the Fourth Proportional to 530,617,391.80, 732,242,192.43 and 289,215,447.28

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Solution

The fourth proportional to 530,617,391.80, 732,242,192.43 and 289,215,447.28 is: 399,111,971.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,617,391.80 : 732,242,192.43 = 289,215,447.28 : x
  2. Step 2: Convert to fraction form
    530,617,391.80/732,242,192.43 = 289,215,447.28/x
  3. Step 3: Cross multiply
    530,617,391.80x = 732,242,192.43 × 289,215,447.28
  4. Step 4: Simplify right side
    530,617,391.80x = 211,775,753,200,930,240
  5. Step 5: Solve for x
    x = 211,775,753,200,930,240/530,617,391.80
  6. Step 6: Final answer
    x = 399,111,971.21

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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.