Home / 778,573.47-1,074,431.49-439,041.81

Finding the Fourth Proportional to 778,573.47, 1,074,431.49 and 439,041.81

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Solution

The fourth proportional to 778,573.47, 1,074,431.49 and 439,041.81 is: 605,877.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,573.47 : 1,074,431.49 = 439,041.81 : x
  2. Step 2: Convert to fraction form
    778,573.47/1,074,431.49 = 439,041.81/x
  3. Step 3: Cross multiply
    778,573.47x = 1,074,431.49 × 439,041.81
  4. Step 4: Simplify right side
    778,573.47x = 471,720,346,090.60
  5. Step 5: Solve for x
    x = 471,720,346,090.60/778,573.47
  6. Step 6: Final answer
    x = 605,877.75

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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.