Home / 839,418.53-1,158,393.74-457,445.21

Finding the Fourth Proportional to 839,418.53, 1,158,393.74 and 457,445.21

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Solution

The fourth proportional to 839,418.53, 1,158,393.74 and 457,445.21 is: 631,272.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,418.53 : 1,158,393.74 = 457,445.21 : x
  2. Step 2: Convert to fraction form
    839,418.53/1,158,393.74 = 457,445.21/x
  3. Step 3: Cross multiply
    839,418.53x = 1,158,393.74 × 457,445.21
  4. Step 4: Simplify right side
    839,418.53x = 529,901,671,696.58
  5. Step 5: Solve for x
    x = 529,901,671,696.58/839,418.53
  6. Step 6: Final answer
    x = 631,272.30

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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.