Home / 761,913.95-1,143,010.85-621,009.18

Finding the Fourth Proportional to 761,913.95, 1,143,010.85 and 621,009.18

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Solution

The fourth proportional to 761,913.95, 1,143,010.85 and 621,009.18 is: 931,627.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,913.95 : 1,143,010.85 = 621,009.18 : x
  2. Step 2: Convert to fraction form
    761,913.95/1,143,010.85 = 621,009.18/x
  3. Step 3: Cross multiply
    761,913.95x = 1,143,010.85 × 621,009.18
  4. Step 4: Simplify right side
    761,913.95x = 709,820,227,584.56
  5. Step 5: Solve for x
    x = 709,820,227,584.56/761,913.95
  6. Step 6: Final answer
    x = 931,627.82

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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.