Home / 760,422.16-1,049,369.88-420,883.12

Finding the Fourth Proportional to 760,422.16, 1,049,369.88 and 420,883.12

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Solution

The fourth proportional to 760,422.16, 1,049,369.88 and 420,883.12 is: 580,811.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,422.16 : 1,049,369.88 = 420,883.12 : x
  2. Step 2: Convert to fraction form
    760,422.16/1,049,369.88 = 420,883.12/x
  3. Step 3: Cross multiply
    760,422.16x = 1,049,369.88 × 420,883.12
  4. Step 4: Simplify right side
    760,422.16x = 441,662,069,128.43
  5. Step 5: Solve for x
    x = 441,662,069,128.43/760,422.16
  6. Step 6: Final answer
    x = 580,811.68

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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.