Home / 987,030.60-1,481,237.10-426,467.40

Finding the Fourth Proportional to 987,030.60, 1,481,237.10 and 426,467.40

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Solution

The fourth proportional to 987,030.60, 1,481,237.10 and 426,467.40 is: 639,999.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,030.60 : 1,481,237.10 = 426,467.40 : x
  2. Step 2: Convert to fraction form
    987,030.60/1,481,237.10 = 426,467.40/x
  3. Step 3: Cross multiply
    987,030.60x = 1,481,237.10 × 426,467.40
  4. Step 4: Simplify right side
    987,030.60x = 631,699,334,820.54
  5. Step 5: Solve for x
    x = 631,699,334,820.54/987,030.60
  6. Step 6: Final answer
    x = 639,999.75

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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.