Home / 970,979.07-1,339,325.76-644,285.01

Finding the Fourth Proportional to 970,979.07, 1,339,325.76 and 644,285.01

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Solution

The fourth proportional to 970,979.07, 1,339,325.76 and 644,285.01 is: 888,698.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    970,979.07 : 1,339,325.76 = 644,285.01 : x
  2. Step 2: Convert to fraction form
    970,979.07/1,339,325.76 = 644,285.01/x
  3. Step 3: Cross multiply
    970,979.07x = 1,339,325.76 × 644,285.01
  4. Step 4: Simplify right side
    970,979.07x = 862,907,510,674.86
  5. Step 5: Solve for x
    x = 862,907,510,674.86/970,979.07
  6. Step 6: Final answer
    x = 888,698.36

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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.