Home / 1,391,994,330.31-1,920,962,168.86-756,910,271.28

Finding the Fourth Proportional to 1,391,994,330.31, 1,920,962,168.86 and 756,910,271.28

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Solution

The fourth proportional to 1,391,994,330.31, 1,920,962,168.86 and 756,910,271.28 is: 1,044,541,608.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,994,330.31 : 1,920,962,168.86 = 756,910,271.28 : x
  2. Step 2: Convert to fraction form
    1,391,994,330.31/1,920,962,168.86 = 756,910,271.28/x
  3. Step 3: Cross multiply
    1,391,994,330.31x = 1,920,962,168.86 × 756,910,271.28
  4. Step 4: Simplify right side
    1,391,994,330.31x = 1,453,995,996,338,876,416
  5. Step 5: Solve for x
    x = 1,453,995,996,338,876,416/1,391,994,330.31
  6. Step 6: Final answer
    x = 1,044,541,608.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.