Home / 783,788.90-1,081,728.72-461,528.97

Finding the Fourth Proportional to 783,788.90, 1,081,728.72 and 461,528.97

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Solution

The fourth proportional to 783,788.90, 1,081,728.72 and 461,528.97 is: 636,968.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,788.90 : 1,081,728.72 = 461,528.97 : x
  2. Step 2: Convert to fraction form
    783,788.90/1,081,728.72 = 461,528.97/x
  3. Step 3: Cross multiply
    783,788.90x = 1,081,728.72 × 461,528.97
  4. Step 4: Simplify right side
    783,788.90x = 499,249,141,961.02
  5. Step 5: Solve for x
    x = 499,249,141,961.02/783,788.90
  6. Step 6: Final answer
    x = 636,968.89

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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.