Home / 601,890.08-830,872.88-421,311.20

Finding the Fourth Proportional to 601,890.08, 830,872.88 and 421,311.20

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Solution

The fourth proportional to 601,890.08, 830,872.88 and 421,311.20 is: 581,594.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    601,890.08 : 830,872.88 = 421,311.20 : x
  2. Step 2: Convert to fraction form
    601,890.08/830,872.88 = 421,311.20/x
  3. Step 3: Cross multiply
    601,890.08x = 830,872.88 × 421,311.20
  4. Step 4: Simplify right side
    601,890.08x = 350,056,050,120.26
  5. Step 5: Solve for x
    x = 350,056,050,120.26/601,890.08
  6. Step 6: Final answer
    x = 581,594.65

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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.