Home / 1,211,543.69-1,671,965.33-667,714.50

Finding the Fourth Proportional to 1,211,543.69, 1,671,965.33 and 667,714.50

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Solution

The fourth proportional to 1,211,543.69, 1,671,965.33 and 667,714.50 is: 921,465.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,543.69 : 1,671,965.33 = 667,714.50 : x
  2. Step 2: Convert to fraction form
    1,211,543.69/1,671,965.33 = 667,714.50/x
  3. Step 3: Cross multiply
    1,211,543.69x = 1,671,965.33 × 667,714.50
  4. Step 4: Simplify right side
    1,211,543.69x = 1,116,395,490,999.71
  5. Step 5: Solve for x
    x = 1,116,395,490,999.71/1,211,543.69
  6. Step 6: Final answer
    x = 921,465.32

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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.