Home / 1,278,002,740.80-1,915,492,456.80-664,271,054.40

Finding the Fourth Proportional to 1,278,002,740.80, 1,915,492,456.80 and 664,271,054.40

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Solution

The fourth proportional to 1,278,002,740.80, 1,915,492,456.80 and 664,271,054.40 is: 995,620,864.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,002,740.80 : 1,915,492,456.80 = 664,271,054.40 : x
  2. Step 2: Convert to fraction form
    1,278,002,740.80/1,915,492,456.80 = 664,271,054.40/x
  3. Step 3: Cross multiply
    1,278,002,740.80x = 1,915,492,456.80 × 664,271,054.40
  4. Step 4: Simplify right side
    1,278,002,740.80x = 1,272,406,193,973,782,272
  5. Step 5: Solve for x
    x = 1,272,406,193,973,782,272/1,278,002,740.80
  6. Step 6: Final answer
    x = 995,620,864.77

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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.