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Finding the Fourth Proportional to 713,418.40, 983,995.77 and 455,472.69

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Solution

The fourth proportional to 713,418.40, 983,995.77 and 455,472.69 is: 628,219.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,418.40 : 983,995.77 = 455,472.69 : x
  2. Step 2: Convert to fraction form
    713,418.40/983,995.77 = 455,472.69/x
  3. Step 3: Cross multiply
    713,418.40x = 983,995.77 × 455,472.69
  4. Step 4: Simplify right side
    713,418.40x = 448,183,200,310.52
  5. Step 5: Solve for x
    x = 448,183,200,310.52/713,418.40
  6. Step 6: Final answer
    x = 628,219.29

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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.