Home / 772,321.36-1,065,788.40-423,457.60

Finding the Fourth Proportional to 772,321.36, 1,065,788.40 and 423,457.60

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Solution

The fourth proportional to 772,321.36, 1,065,788.40 and 423,457.60 is: 584,363.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,321.36 : 1,065,788.40 = 423,457.60 : x
  2. Step 2: Convert to fraction form
    772,321.36/1,065,788.40 = 423,457.60/x
  3. Step 3: Cross multiply
    772,321.36x = 1,065,788.40 × 423,457.60
  4. Step 4: Simplify right side
    772,321.36x = 451,316,197,971.84
  5. Step 5: Solve for x
    x = 451,316,197,971.84/772,321.36
  6. Step 6: Final answer
    x = 584,363.22

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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.