Home / 766,704.64-1,148,582.98-428,720.19

Finding the Fourth Proportional to 766,704.64, 1,148,582.98 and 428,720.19

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Solution

The fourth proportional to 766,704.64, 1,148,582.98 and 428,720.19 is: 642,256.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,704.64 : 1,148,582.98 = 428,720.19 : x
  2. Step 2: Convert to fraction form
    766,704.64/1,148,582.98 = 428,720.19/x
  3. Step 3: Cross multiply
    766,704.64x = 1,148,582.98 × 428,720.19
  4. Step 4: Simplify right side
    766,704.64x = 492,420,713,416.37
  5. Step 5: Solve for x
    x = 492,420,713,416.37/766,704.64
  6. Step 6: Final answer
    x = 642,256.08

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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.