Home / 805,069.05-1,111,100.40-519,420.12

Finding the Fourth Proportional to 805,069.05, 1,111,100.40 and 519,420.12

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Solution

The fourth proportional to 805,069.05, 1,111,100.40 and 519,420.12 is: 716,867.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,069.05 : 1,111,100.40 = 519,420.12 : x
  2. Step 2: Convert to fraction form
    805,069.05/1,111,100.40 = 519,420.12/x
  3. Step 3: Cross multiply
    805,069.05x = 1,111,100.40 × 519,420.12
  4. Step 4: Simplify right side
    805,069.05x = 577,127,903,100.05
  5. Step 5: Solve for x
    x = 577,127,903,100.05/805,069.05
  6. Step 6: Final answer
    x = 716,867.58

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Double scale
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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.