Home / 877,820.95-1,211,914.97-555,807.07

Finding the Fourth Proportional to 877,820.95, 1,211,914.97 and 555,807.07

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Solution

The fourth proportional to 877,820.95, 1,211,914.97 and 555,807.07 is: 767,344.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,820.95 : 1,211,914.97 = 555,807.07 : x
  2. Step 2: Convert to fraction form
    877,820.95/1,211,914.97 = 555,807.07/x
  3. Step 3: Cross multiply
    877,820.95x = 1,211,914.97 × 555,807.07
  4. Step 4: Simplify right side
    877,820.95x = 673,590,908,564.84
  5. Step 5: Solve for x
    x = 673,590,908,564.84/877,820.95
  6. Step 6: Final answer
    x = 767,344.31

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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.