Home / 648,001.40-973,038.90-438,567.80

Finding the Fourth Proportional to 648,001.40, 973,038.90 and 438,567.80

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Solution

The fourth proportional to 648,001.40, 973,038.90 and 438,567.80 is: 658,553.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,001.40 : 973,038.90 = 438,567.80 : x
  2. Step 2: Convert to fraction form
    648,001.40/973,038.90 = 438,567.80/x
  3. Step 3: Cross multiply
    648,001.40x = 973,038.90 × 438,567.80
  4. Step 4: Simplify right side
    648,001.40x = 426,743,529,687.42
  5. Step 5: Solve for x
    x = 426,743,529,687.42/648,001.40
  6. Step 6: Final answer
    x = 658,553.41

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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.