Home / 990,448,003.60-1,482,144,811.80-862,461,264.40

Finding the Fourth Proportional to 990,448,003.60, 1,482,144,811.80 and 862,461,264.40

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Solution

The fourth proportional to 990,448,003.60, 1,482,144,811.80 and 862,461,264.40 is: 1,290,620,490.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,448,003.60 : 1,482,144,811.80 = 862,461,264.40 : x
  2. Step 2: Convert to fraction form
    990,448,003.60/1,482,144,811.80 = 862,461,264.40/x
  3. Step 3: Cross multiply
    990,448,003.60x = 1,482,144,811.80 × 862,461,264.40
  4. Step 4: Simplify right side
    990,448,003.60x = 1,278,292,488,408,928,000
  5. Step 5: Solve for x
    x = 1,278,292,488,408,928,000/990,448,003.60
  6. Step 6: Final answer
    x = 1,290,620,490.69

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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.