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Finding the Fourth Proportional to 648,628, 973,035.03 and 199,386.60

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Solution

The fourth proportional to 648,628, 973,035.03 and 199,386.60 is: 299,108.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,628 : 973,035.03 = 199,386.60 : x
  2. Step 2: Convert to fraction form
    648,628/973,035.03 = 199,386.60/x
  3. Step 3: Cross multiply
    648,628x = 973,035.03 × 199,386.60
  4. Step 4: Simplify right side
    648,628x = 194,010,146,312.60
  5. Step 5: Solve for x
    x = 194,010,146,312.60/648,628
  6. Step 6: Final answer
    x = 299,108.50

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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.