Home / 999,619.20-1,499,428.80-289,670.40

Finding the Fourth Proportional to 999,619.20, 1,499,428.80 and 289,670.40

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Solution

The fourth proportional to 999,619.20, 1,499,428.80 and 289,670.40 is: 434,505.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,619.20 : 1,499,428.80 = 289,670.40 : x
  2. Step 2: Convert to fraction form
    999,619.20/1,499,428.80 = 289,670.40/x
  3. Step 3: Cross multiply
    999,619.20x = 1,499,428.80 × 289,670.40
  4. Step 4: Simplify right side
    999,619.20x = 434,340,140,267.52
  5. Step 5: Solve for x
    x = 434,340,140,267.52/999,619.20
  6. Step 6: Final answer
    x = 434,505.60

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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.