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Finding the Fourth Proportional to 448,412.00, 618,458.65 and 287,282.05

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Solution

The fourth proportional to 448,412.00, 618,458.65 and 287,282.05 is: 396,225.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,412.00 : 618,458.65 = 287,282.05 : x
  2. Step 2: Convert to fraction form
    448,412.00/618,458.65 = 287,282.05/x
  3. Step 3: Cross multiply
    448,412.00x = 618,458.65 × 287,282.05
  4. Step 4: Simplify right side
    448,412.00x = 177,672,066,547.88
  5. Step 5: Solve for x
    x = 177,672,066,547.88/448,412.00
  6. Step 6: Final answer
    x = 396,225.05

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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.