Home / 779,684.28-1,075,967.58-421,988.28

Finding the Fourth Proportional to 779,684.28, 1,075,967.58 and 421,988.28

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Solution

The fourth proportional to 779,684.28, 1,075,967.58 and 421,988.28 is: 582,345.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,684.28 : 1,075,967.58 = 421,988.28 : x
  2. Step 2: Convert to fraction form
    779,684.28/1,075,967.58 = 421,988.28/x
  3. Step 3: Cross multiply
    779,684.28x = 1,075,967.58 × 421,988.28
  4. Step 4: Simplify right side
    779,684.28x = 454,045,708,419.96
  5. Step 5: Solve for x
    x = 454,045,708,419.96/779,684.28
  6. Step 6: Final answer
    x = 582,345.60

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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.