Home / 811,140.60-1,119,352.86-448,554.36

Finding the Fourth Proportional to 811,140.60, 1,119,352.86 and 448,554.36

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Solution

The fourth proportional to 811,140.60, 1,119,352.86 and 448,554.36 is: 618,993.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,140.60 : 1,119,352.86 = 448,554.36 : x
  2. Step 2: Convert to fraction form
    811,140.60/1,119,352.86 = 448,554.36/x
  3. Step 3: Cross multiply
    811,140.60x = 1,119,352.86 × 448,554.36
  4. Step 4: Simplify right side
    811,140.60x = 502,090,605,731.47
  5. Step 5: Solve for x
    x = 502,090,605,731.47/811,140.60
  6. Step 6: Final answer
    x = 618,993.31

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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.