Home / 857,075.71-1,182,774.09-489,601.50

Finding the Fourth Proportional to 857,075.71, 1,182,774.09 and 489,601.50

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Solution

The fourth proportional to 857,075.71, 1,182,774.09 and 489,601.50 is: 675,655.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,075.71 : 1,182,774.09 = 489,601.50 : x
  2. Step 2: Convert to fraction form
    857,075.71/1,182,774.09 = 489,601.50/x
  3. Step 3: Cross multiply
    857,075.71x = 1,182,774.09 × 489,601.50
  4. Step 4: Simplify right side
    857,075.71x = 579,087,968,625.14
  5. Step 5: Solve for x
    x = 579,087,968,625.14/857,075.71
  6. Step 6: Final answer
    x = 675,655.56

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1.5x scale

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.