Home / 779,627.25-1,075,885.65-421,931.25

Finding the Fourth Proportional to 779,627.25, 1,075,885.65 and 421,931.25

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Solution

The fourth proportional to 779,627.25, 1,075,885.65 and 421,931.25 is: 582,265.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,627.25 : 1,075,885.65 = 421,931.25 : x
  2. Step 2: Convert to fraction form
    779,627.25/1,075,885.65 = 421,931.25/x
  3. Step 3: Cross multiply
    779,627.25x = 1,075,885.65 × 421,931.25
  4. Step 4: Simplify right side
    779,627.25x = 453,949,777,161.56
  5. Step 5: Solve for x
    x = 453,949,777,161.56/779,627.25
  6. Step 6: Final answer
    x = 582,265.15

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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.