Home / 1,345,442.72-2,015,880.28-811,842.53

Finding the Fourth Proportional to 1,345,442.72, 2,015,880.28 and 811,842.53

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Solution

The fourth proportional to 1,345,442.72, 2,015,880.28 and 811,842.53 is: 1,216,385.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,345,442.72 : 2,015,880.28 = 811,842.53 : x
  2. Step 2: Convert to fraction form
    1,345,442.72/2,015,880.28 = 811,842.53/x
  3. Step 3: Cross multiply
    1,345,442.72x = 2,015,880.28 × 811,842.53
  4. Step 4: Simplify right side
    1,345,442.72x = 1,636,577,334,583.30
  5. Step 5: Solve for x
    x = 1,636,577,334,583.30/1,345,442.72
  6. Step 6: Final answer
    x = 1,216,385.74

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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.