Home / 991,949.02-1,487,890.59-430,983.52

Finding the Fourth Proportional to 991,949.02, 1,487,890.59 and 430,983.52

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Solution

The fourth proportional to 991,949.02, 1,487,890.59 and 430,983.52 is: 646,460.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,949.02 : 1,487,890.59 = 430,983.52 : x
  2. Step 2: Convert to fraction form
    991,949.02/1,487,890.59 = 430,983.52/x
  3. Step 3: Cross multiply
    991,949.02x = 1,487,890.59 × 430,983.52
  4. Step 4: Simplify right side
    991,949.02x = 641,256,323,853.08
  5. Step 5: Solve for x
    x = 641,256,323,853.08/991,949.02
  6. Step 6: Final answer
    x = 646,460.97

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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.