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Finding the Fourth Proportional to 710,578.32, 980,600.63 and 388,288.41

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Solution

The fourth proportional to 710,578.32, 980,600.63 and 388,288.41 is: 535,839.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,578.32 : 980,600.63 = 388,288.41 : x
  2. Step 2: Convert to fraction form
    710,578.32/980,600.63 = 388,288.41/x
  3. Step 3: Cross multiply
    710,578.32x = 980,600.63 × 388,288.41
  4. Step 4: Simplify right side
    710,578.32x = 380,755,859,467.70
  5. Step 5: Solve for x
    x = 380,755,859,467.70/710,578.32
  6. Step 6: Final answer
    x = 535,839.40

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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.