Home / 779,121.40-1,075,188.60-439,621.24

Finding the Fourth Proportional to 779,121.40, 1,075,188.60 and 439,621.24

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Solution

The fourth proportional to 779,121.40, 1,075,188.60 and 439,621.24 is: 606,677.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,121.40 : 1,075,188.60 = 439,621.24 : x
  2. Step 2: Convert to fraction form
    779,121.40/1,075,188.60 = 439,621.24/x
  3. Step 3: Cross multiply
    779,121.40x = 1,075,188.60 × 439,621.24
  4. Step 4: Simplify right side
    779,121.40x = 472,675,745,565.86
  5. Step 5: Solve for x
    x = 472,675,745,565.86/779,121.40
  6. Step 6: Final answer
    x = 606,677.91

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Double scale
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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.