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Finding the Fourth Proportional to 575,287.16, 793,923.45 and 320,640.17

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Solution

The fourth proportional to 575,287.16, 793,923.45 and 320,640.17 is: 442,498.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,287.16 : 793,923.45 = 320,640.17 : x
  2. Step 2: Convert to fraction form
    575,287.16/793,923.45 = 320,640.17/x
  3. Step 3: Cross multiply
    575,287.16x = 793,923.45 × 320,640.17
  4. Step 4: Simplify right side
    575,287.16x = 254,563,749,974.99
  5. Step 5: Solve for x
    x = 254,563,749,974.99/575,287.16
  6. Step 6: Final answer
    x = 442,498.58

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1.5x scale

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.