Home / 820,929,948.40-1,229,677,981.80-384,603,036.40

Finding the Fourth Proportional to 820,929,948.40, 1,229,677,981.80 and 384,603,036.40

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Solution

The fourth proportional to 820,929,948.40, 1,229,677,981.80 and 384,603,036.40 is: 576,100,173.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,929,948.40 : 1,229,677,981.80 = 384,603,036.40 : x
  2. Step 2: Convert to fraction form
    820,929,948.40/1,229,677,981.80 = 384,603,036.40/x
  3. Step 3: Cross multiply
    820,929,948.40x = 1,229,677,981.80 × 384,603,036.40
  4. Step 4: Simplify right side
    820,929,948.40x = 472,937,885,594,503,872
  5. Step 5: Solve for x
    x = 472,937,885,594,503,872/820,929,948.40
  6. Step 6: Final answer
    x = 576,100,173.37

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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.