Home / 813,140.22-1,122,140.13-450,570.12

Finding the Fourth Proportional to 813,140.22, 1,122,140.13 and 450,570.12

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Solution

The fourth proportional to 813,140.22, 1,122,140.13 and 450,570.12 is: 621,790.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,140.22 : 1,122,140.13 = 450,570.12 : x
  2. Step 2: Convert to fraction form
    813,140.22/1,122,140.13 = 450,570.12/x
  3. Step 3: Cross multiply
    813,140.22x = 1,122,140.13 × 450,570.12
  4. Step 4: Simplify right side
    813,140.22x = 505,602,813,030.92
  5. Step 5: Solve for x
    x = 505,602,813,030.92/813,140.22
  6. Step 6: Final answer
    x = 621,790.44

Related Problems

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Half scale
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Double scale
Find fourth proportional to 813,141.22, 1,122,141.51 and 450,571.12
Similar ratio
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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.