Home / 448,623.47-618,944.05-287,567.32

Finding the Fourth Proportional to 448,623.47, 618,944.05 and 287,567.32

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Solution

The fourth proportional to 448,623.47, 618,944.05 and 287,567.32 is: 396,742.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,623.47 : 618,944.05 = 287,567.32 : x
  2. Step 2: Convert to fraction form
    448,623.47/618,944.05 = 287,567.32/x
  3. Step 3: Cross multiply
    448,623.47x = 618,944.05 × 287,567.32
  4. Step 4: Simplify right side
    448,623.47x = 177,988,081,688.45
  5. Step 5: Solve for x
    x = 177,988,081,688.45/448,623.47
  6. Step 6: Final answer
    x = 396,742.69

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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.