Home / 1,453,428.20-2,181,438.30-853,639.40

Finding the Fourth Proportional to 1,453,428.20, 2,181,438.30 and 853,639.40

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Solution

The fourth proportional to 1,453,428.20, 2,181,438.30 and 853,639.40 is: 1,281,220.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,453,428.20 : 2,181,438.30 = 853,639.40 : x
  2. Step 2: Convert to fraction form
    1,453,428.20/2,181,438.30 = 853,639.40/x
  3. Step 3: Cross multiply
    1,453,428.20x = 2,181,438.30 × 853,639.40
  4. Step 4: Simplify right side
    1,453,428.20x = 1,862,161,681,549.02
  5. Step 5: Solve for x
    x = 1,862,161,681,549.02/1,453,428.20
  6. Step 6: Final answer
    x = 1,281,220.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.