Home / 660,669.60-911,869.20-434,336.16

Finding the Fourth Proportional to 660,669.60, 911,869.20 and 434,336.16

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Solution

The fourth proportional to 660,669.60, 911,869.20 and 434,336.16 is: 599,479.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,669.60 : 911,869.20 = 434,336.16 : x
  2. Step 2: Convert to fraction form
    660,669.60/911,869.20 = 434,336.16/x
  3. Step 3: Cross multiply
    660,669.60x = 911,869.20 × 434,336.16
  4. Step 4: Simplify right side
    660,669.60x = 396,057,766,750.27
  5. Step 5: Solve for x
    x = 396,057,766,750.27/660,669.60
  6. Step 6: Final answer
    x = 599,479.33

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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.