Home / 648,176.20-973,139.10-515,206.60

Finding the Fourth Proportional to 648,176.20, 973,139.10 and 515,206.60

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Solution

The fourth proportional to 648,176.20, 973,139.10 and 515,206.60 is: 773,505.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,176.20 : 973,139.10 = 515,206.60 : x
  2. Step 2: Convert to fraction form
    648,176.20/973,139.10 = 515,206.60/x
  3. Step 3: Cross multiply
    648,176.20x = 973,139.10 × 515,206.60
  4. Step 4: Simplify right side
    648,176.20x = 501,367,687,038.06
  5. Step 5: Solve for x
    x = 501,367,687,038.06/648,176.20
  6. Step 6: Final answer
    x = 773,505.24

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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.