Home / 459,109.40-688,664.10-407,933.60

Finding the Fourth Proportional to 459,109.40, 688,664.10 and 407,933.60

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Solution

The fourth proportional to 459,109.40, 688,664.10 and 407,933.60 is: 611,900.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,109.40 : 688,664.10 = 407,933.60 : x
  2. Step 2: Convert to fraction form
    459,109.40/688,664.10 = 407,933.60/x
  3. Step 3: Cross multiply
    459,109.40x = 688,664.10 × 407,933.60
  4. Step 4: Simplify right side
    459,109.40x = 280,929,225,503.76
  5. Step 5: Solve for x
    x = 280,929,225,503.76/459,109.40
  6. Step 6: Final answer
    x = 611,900.40

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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.