Home / 987,430.40-1,481,145.60-651,507.20

Finding the Fourth Proportional to 987,430.40, 1,481,145.60 and 651,507.20

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Solution

The fourth proportional to 987,430.40, 1,481,145.60 and 651,507.20 is: 977,260.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,430.40 : 1,481,145.60 = 651,507.20 : x
  2. Step 2: Convert to fraction form
    987,430.40/1,481,145.60 = 651,507.20/x
  3. Step 3: Cross multiply
    987,430.40x = 1,481,145.60 × 651,507.20
  4. Step 4: Simplify right side
    987,430.40x = 964,977,022,648.32
  5. Step 5: Solve for x
    x = 964,977,022,648.32/987,430.40
  6. Step 6: Final answer
    x = 977,260.80

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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.