Home / 1,021,239.84-1,409,479.32-779,065.20

Finding the Fourth Proportional to 1,021,239.84, 1,409,479.32 and 779,065.20

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Solution

The fourth proportional to 1,021,239.84, 1,409,479.32 and 779,065.20 is: 1,075,238.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021,239.84 : 1,409,479.32 = 779,065.20 : x
  2. Step 2: Convert to fraction form
    1,021,239.84/1,409,479.32 = 779,065.20/x
  3. Step 3: Cross multiply
    1,021,239.84x = 1,409,479.32 × 779,065.20
  4. Step 4: Simplify right side
    1,021,239.84x = 1,098,076,288,331.66
  5. Step 5: Solve for x
    x = 1,098,076,288,331.66/1,021,239.84
  6. Step 6: Final answer
    x = 1,075,238.40

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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.