Home / 917,121.90-1,376,010.90-384,806.10

Finding the Fourth Proportional to 917,121.90, 1,376,010.90 and 384,806.10

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Solution

The fourth proportional to 917,121.90, 1,376,010.90 and 384,806.10 is: 577,346.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,121.90 : 1,376,010.90 = 384,806.10 : x
  2. Step 2: Convert to fraction form
    917,121.90/1,376,010.90 = 384,806.10/x
  3. Step 3: Cross multiply
    917,121.90x = 1,376,010.90 × 384,806.10
  4. Step 4: Simplify right side
    917,121.90x = 529,497,387,986.49
  5. Step 5: Solve for x
    x = 529,497,387,986.49/917,121.90
  6. Step 6: Final answer
    x = 577,346.79

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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.