Home / 990,448,029.60-1,482,144,850.80-862,461,290.40

Finding the Fourth Proportional to 990,448,029.60, 1,482,144,850.80 and 862,461,290.40

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Solution

The fourth proportional to 990,448,029.60, 1,482,144,850.80 and 862,461,290.40 is: 1,290,620,529.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,448,029.60 : 1,482,144,850.80 = 862,461,290.40 : x
  2. Step 2: Convert to fraction form
    990,448,029.60/1,482,144,850.80 = 862,461,290.40/x
  3. Step 3: Cross multiply
    990,448,029.60x = 1,482,144,850.80 × 862,461,290.40
  4. Step 4: Simplify right side
    990,448,029.60x = 1,278,292,560,580,683,520
  5. Step 5: Solve for x
    x = 1,278,292,560,580,683,520/990,448,029.60
  6. Step 6: Final answer
    x = 1,290,620,529.68

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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.