Home / 680,615.40-1,021,311.90-470,404.20

Finding the Fourth Proportional to 680,615.40, 1,021,311.90 and 470,404.20

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Solution

The fourth proportional to 680,615.40, 1,021,311.90 and 470,404.20 is: 705,875.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,615.40 : 1,021,311.90 = 470,404.20 : x
  2. Step 2: Convert to fraction form
    680,615.40/1,021,311.90 = 470,404.20/x
  3. Step 3: Cross multiply
    680,615.40x = 1,021,311.90 × 470,404.20
  4. Step 4: Simplify right side
    680,615.40x = 480,429,407,269.98
  5. Step 5: Solve for x
    x = 480,429,407,269.98/680,615.40
  6. Step 6: Final answer
    x = 705,875.02

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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.