Home / 779,643.08-1,075,907.60-421,947.08

Finding the Fourth Proportional to 779,643.08, 1,075,907.60 and 421,947.08

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Solution

The fourth proportional to 779,643.08, 1,075,907.60 and 421,947.08 is: 582,287.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,643.08 : 1,075,907.60 = 421,947.08 : x
  2. Step 2: Convert to fraction form
    779,643.08/1,075,907.60 = 421,947.08/x
  3. Step 3: Cross multiply
    779,643.08x = 1,075,907.60 × 421,947.08
  4. Step 4: Simplify right side
    779,643.08x = 453,976,070,169.81
  5. Step 5: Solve for x
    x = 453,976,070,169.81/779,643.08
  6. Step 6: Final answer
    x = 582,287.05

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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.