Home / 820,929,931.40-1,229,677,956.30-384,603,019.40

Finding the Fourth Proportional to 820,929,931.40, 1,229,677,956.30 and 384,603,019.40

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Solution

The fourth proportional to 820,929,931.40, 1,229,677,956.30 and 384,603,019.40 is: 576,100,147.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,929,931.40 : 1,229,677,956.30 = 384,603,019.40 : x
  2. Step 2: Convert to fraction form
    820,929,931.40/1,229,677,956.30 = 384,603,019.40/x
  3. Step 3: Cross multiply
    820,929,931.40x = 1,229,677,956.30 × 384,603,019.40
  4. Step 4: Simplify right side
    820,929,931.40x = 472,937,854,882,601,216
  5. Step 5: Solve for x
    x = 472,937,854,882,601,216/820,929,931.40
  6. Step 6: Final answer
    x = 576,100,147.88

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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.