Home / 1,319,718.48-1,979,182.56-688,287.84

Finding the Fourth Proportional to 1,319,718.48, 1,979,182.56 and 688,287.84

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Solution

The fourth proportional to 1,319,718.48, 1,979,182.56 and 688,287.84 is: 1,032,225.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,718.48 : 1,979,182.56 = 688,287.84 : x
  2. Step 2: Convert to fraction form
    1,319,718.48/1,979,182.56 = 688,287.84/x
  3. Step 3: Cross multiply
    1,319,718.48x = 1,979,182.56 × 688,287.84
  4. Step 4: Simplify right side
    1,319,718.48x = 1,362,247,289,188.07
  5. Step 5: Solve for x
    x = 1,362,247,289,188.07/1,319,718.48
  6. Step 6: Final answer
    x = 1,032,225.67

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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.