Home / 607,059.40-911,139.90-307,748.20

Finding the Fourth Proportional to 607,059.40, 911,139.90 and 307,748.20

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Solution

The fourth proportional to 607,059.40, 911,139.90 and 307,748.20 is: 461,901.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,059.40 : 911,139.90 = 307,748.20 : x
  2. Step 2: Convert to fraction form
    607,059.40/911,139.90 = 307,748.20/x
  3. Step 3: Cross multiply
    607,059.40x = 911,139.90 × 307,748.20
  4. Step 4: Simplify right side
    607,059.40x = 280,401,664,173.18
  5. Step 5: Solve for x
    x = 280,401,664,173.18/607,059.40
  6. Step 6: Final answer
    x = 461,901.53

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1.5x scale

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.