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Finding the Fourth Proportional to 508,416.84, 701,614.95 and 278,975.63

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Solution

The fourth proportional to 508,416.84, 701,614.95 and 278,975.63 is: 384,986.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,416.84 : 701,614.95 = 278,975.63 : x
  2. Step 2: Convert to fraction form
    508,416.84/701,614.95 = 278,975.63/x
  3. Step 3: Cross multiply
    508,416.84x = 701,614.95 × 278,975.63
  4. Step 4: Simplify right side
    508,416.84x = 195,733,472,693.67
  5. Step 5: Solve for x
    x = 195,733,472,693.67/508,416.84
  6. Step 6: Final answer
    x = 384,986.21

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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.