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Finding the Fourth Proportional to 679,353.99, 936,643.82 and 424,612.23

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Solution

The fourth proportional to 679,353.99, 936,643.82 and 424,612.23 is: 585,424.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,353.99 : 936,643.82 = 424,612.23 : x
  2. Step 2: Convert to fraction form
    679,353.99/936,643.82 = 424,612.23/x
  3. Step 3: Cross multiply
    679,353.99x = 936,643.82 × 424,612.23
  4. Step 4: Simplify right side
    679,353.99x = 397,710,419,002.86
  5. Step 5: Solve for x
    x = 397,710,419,002.86/679,353.99
  6. Step 6: Final answer
    x = 585,424.43

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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.