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Finding the Fourth Proportional to 607,709.40, 911,564.10 and 603,772.80

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Solution

The fourth proportional to 607,709.40, 911,564.10 and 603,772.80 is: 905,659.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,709.40 : 911,564.10 = 603,772.80 : x
  2. Step 2: Convert to fraction form
    607,709.40/911,564.10 = 603,772.80/x
  3. Step 3: Cross multiply
    607,709.40x = 911,564.10 × 603,772.80
  4. Step 4: Simplify right side
    607,709.40x = 550,377,609,036.48
  5. Step 5: Solve for x
    x = 550,377,609,036.48/607,709.40
  6. Step 6: Final answer
    x = 905,659.20

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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.