Home / 839,416.10-1,158,390.38-457,442.78

Finding the Fourth Proportional to 839,416.10, 1,158,390.38 and 457,442.78

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Solution

The fourth proportional to 839,416.10, 1,158,390.38 and 457,442.78 is: 631,268.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,416.10 : 1,158,390.38 = 457,442.78 : x
  2. Step 2: Convert to fraction form
    839,416.10/1,158,390.38 = 457,442.78/x
  3. Step 3: Cross multiply
    839,416.10x = 1,158,390.38 × 457,442.78
  4. Step 4: Simplify right side
    839,416.10x = 529,897,311,104.11
  5. Step 5: Solve for x
    x = 529,897,311,104.11/839,416.10
  6. Step 6: Final answer
    x = 631,268.94

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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.