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Finding the Fourth Proportional to 500,018.61, 690,020.44 and 270,570.89

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Solution

The fourth proportional to 500,018.61, 690,020.44 and 270,570.89 is: 373,384.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,018.61 : 690,020.44 = 270,570.89 : x
  2. Step 2: Convert to fraction form
    500,018.61/690,020.44 = 270,570.89/x
  3. Step 3: Cross multiply
    500,018.61x = 690,020.44 × 270,570.89
  4. Step 4: Simplify right side
    500,018.61x = 186,699,445,617.62
  5. Step 5: Solve for x
    x = 186,699,445,617.62/500,018.61
  6. Step 6: Final answer
    x = 373,384.99

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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.