Home / 768,590.54-1,153,588.95-389,772.75

Finding the Fourth Proportional to 768,590.54, 1,153,588.95 and 389,772.75

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Solution

The fourth proportional to 768,590.54, 1,153,588.95 and 389,772.75 is: 585,015.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,590.54 : 1,153,588.95 = 389,772.75 : x
  2. Step 2: Convert to fraction form
    768,590.54/1,153,588.95 = 389,772.75/x
  3. Step 3: Cross multiply
    768,590.54x = 1,153,588.95 × 389,772.75
  4. Step 4: Simplify right side
    768,590.54x = 449,637,537,411.11
  5. Step 5: Solve for x
    x = 449,637,537,411.11/768,590.54
  6. Step 6: Final answer
    x = 585,015.71

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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.