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Finding the Fourth Proportional to 648,065.70, 972,098.55 and 620,072.10

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Solution

The fourth proportional to 648,065.70, 972,098.55 and 620,072.10 is: 930,108.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,065.70 : 972,098.55 = 620,072.10 : x
  2. Step 2: Convert to fraction form
    648,065.70/972,098.55 = 620,072.10/x
  3. Step 3: Cross multiply
    648,065.70x = 972,098.55 × 620,072.10
  4. Step 4: Simplify right side
    648,065.70x = 602,771,189,305.46
  5. Step 5: Solve for x
    x = 602,771,189,305.46/648,065.70
  6. Step 6: Final answer
    x = 930,108.15

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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.