Home / 660,629.60-911,814-434,296.16

Finding the Fourth Proportional to 660,629.60, 911,814 and 434,296.16

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Solution

The fourth proportional to 660,629.60, 911,814 and 434,296.16 is: 599,424.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,629.60 : 911,814 = 434,296.16 : x
  2. Step 2: Convert to fraction form
    660,629.60/911,814 = 434,296.16/x
  3. Step 3: Cross multiply
    660,629.60x = 911,814 × 434,296.16
  4. Step 4: Simplify right side
    660,629.60x = 395,997,318,834.24
  5. Step 5: Solve for x
    x = 395,997,318,834.24/660,629.60
  6. Step 6: Final answer
    x = 599,424.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.