Home / 448,638.10-618,770.50-287,508.13

Finding the Fourth Proportional to 448,638.10, 618,770.50 and 287,508.13

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Solution

The fourth proportional to 448,638.10, 618,770.50 and 287,508.13 is: 396,536.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,638.10 : 618,770.50 = 287,508.13 : x
  2. Step 2: Convert to fraction form
    448,638.10/618,770.50 = 287,508.13/x
  3. Step 3: Cross multiply
    448,638.10x = 618,770.50 × 287,508.13
  4. Step 4: Simplify right side
    448,638.10x = 177,901,549,354.17
  5. Step 5: Solve for x
    x = 177,901,549,354.17/448,638.10
  6. Step 6: Final answer
    x = 396,536.87

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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.