Home / 448,459.16-618,718.37-287,402.94

Finding the Fourth Proportional to 448,459.16, 618,718.37 and 287,402.94

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Solution

The fourth proportional to 448,459.16, 618,718.37 and 287,402.94 is: 396,516.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,459.16 : 618,718.37 = 287,402.94 : x
  2. Step 2: Convert to fraction form
    448,459.16/618,718.37 = 287,402.94/x
  3. Step 3: Cross multiply
    448,459.16x = 618,718.37 × 287,402.94
  4. Step 4: Simplify right side
    448,459.16x = 177,821,477,132.99
  5. Step 5: Solve for x
    x = 177,821,477,132.99/448,459.16
  6. Step 6: Final answer
    x = 396,516.55

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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.