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Finding the Fourth Proportional to 1,409,666,919.60, 2,114,500,379.40 and 858,668,890.80

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Solution

The fourth proportional to 1,409,666,919.60, 2,114,500,379.40 and 858,668,890.80 is: 1,288,003,336.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,409,666,919.60 : 2,114,500,379.40 = 858,668,890.80 : x
  2. Step 2: Convert to fraction form
    1,409,666,919.60/2,114,500,379.40 = 858,668,890.80/x
  3. Step 3: Cross multiply
    1,409,666,919.60x = 2,114,500,379.40 × 858,668,890.80
  4. Step 4: Simplify right side
    1,409,666,919.60x = 1,815,655,695,375,577,088
  5. Step 5: Solve for x
    x = 1,815,655,695,375,577,088/1,409,666,919.60
  6. Step 6: Final answer
    x = 1,288,003,336.20

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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.