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Finding the Fourth Proportional to 449,779.34, 620,635.38 and 288,852.32

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Solution

The fourth proportional to 449,779.34, 620,635.38 and 288,852.32 is: 398,577.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,779.34 : 620,635.38 = 288,852.32 : x
  2. Step 2: Convert to fraction form
    449,779.34/620,635.38 = 288,852.32/x
  3. Step 3: Cross multiply
    449,779.34x = 620,635.38 × 288,852.32
  4. Step 4: Simplify right side
    449,779.34x = 179,271,969,387.08
  5. Step 5: Solve for x
    x = 179,271,969,387.08/449,779.34
  6. Step 6: Final answer
    x = 398,577.60

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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.