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Finding the Fourth Proportional to 500,018.99, 690,020.96 and 270,571.28

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Solution

The fourth proportional to 500,018.99, 690,020.96 and 270,571.28 is: 373,385.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,018.99 : 690,020.96 = 270,571.28 : x
  2. Step 2: Convert to fraction form
    500,018.99/690,020.96 = 270,571.28/x
  3. Step 3: Cross multiply
    500,018.99x = 690,020.96 × 270,571.28
  4. Step 4: Simplify right side
    500,018.99x = 186,699,849,571.07
  5. Step 5: Solve for x
    x = 186,699,849,571.07/500,018.99
  6. Step 6: Final answer
    x = 373,385.52

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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.