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Finding the Fourth Proportional to 614,009.70, 921,014.55 and 446,704.20

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Solution

The fourth proportional to 614,009.70, 921,014.55 and 446,704.20 is: 670,056.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,009.70 : 921,014.55 = 446,704.20 : x
  2. Step 2: Convert to fraction form
    614,009.70/921,014.55 = 446,704.20/x
  3. Step 3: Cross multiply
    614,009.70x = 921,014.55 × 446,704.20
  4. Step 4: Simplify right side
    614,009.70x = 411,421,067,746.11
  5. Step 5: Solve for x
    x = 411,421,067,746.11/614,009.70
  6. Step 6: Final answer
    x = 670,056.30

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Similar ratio
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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.