Home / 1,128,455.28-1,688,638.32-977,173.20

Finding the Fourth Proportional to 1,128,455.28, 1,688,638.32 and 977,173.20

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Solution

The fourth proportional to 1,128,455.28, 1,688,638.32 and 977,173.20 is: 1,462,257.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,455.28 : 1,688,638.32 = 977,173.20 : x
  2. Step 2: Convert to fraction form
    1,128,455.28/1,688,638.32 = 977,173.20/x
  3. Step 3: Cross multiply
    1,128,455.28x = 1,688,638.32 × 977,173.20
  4. Step 4: Simplify right side
    1,128,455.28x = 1,650,092,110,797.02
  5. Step 5: Solve for x
    x = 1,650,092,110,797.02/1,128,455.28
  6. Step 6: Final answer
    x = 1,462,257.42

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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.