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Finding the Fourth Proportional to 662,779.60, 994,315.20 and 213,521.20

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Solution

The fourth proportional to 662,779.60, 994,315.20 and 213,521.20 is: 320,328.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,779.60 : 994,315.20 = 213,521.20 : x
  2. Step 2: Convert to fraction form
    662,779.60/994,315.20 = 213,521.20/x
  3. Step 3: Cross multiply
    662,779.60x = 994,315.20 × 213,521.20
  4. Step 4: Simplify right side
    662,779.60x = 212,307,374,682.24
  5. Step 5: Solve for x
    x = 212,307,374,682.24/662,779.60
  6. Step 6: Final answer
    x = 320,328.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.