Home / 760,816.55-1,049,958.50-421,284.80

Finding the Fourth Proportional to 760,816.55, 1,049,958.50 and 421,284.80

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Solution

The fourth proportional to 760,816.55, 1,049,958.50 and 421,284.80 is: 581,390.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,816.55 : 1,049,958.50 = 421,284.80 : x
  2. Step 2: Convert to fraction form
    760,816.55/1,049,958.50 = 421,284.80/x
  3. Step 3: Cross multiply
    760,816.55x = 1,049,958.50 × 421,284.80
  4. Step 4: Simplify right side
    760,816.55x = 442,331,549,324.58
  5. Step 5: Solve for x
    x = 442,331,549,324.58/760,816.55
  6. Step 6: Final answer
    x = 581,390.55

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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.