Home / 778,482.72-1,074,322.44-438,885.36

Finding the Fourth Proportional to 778,482.72, 1,074,322.44 and 438,885.36

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Solution

The fourth proportional to 778,482.72, 1,074,322.44 and 438,885.36 is: 605,670.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,482.72 : 1,074,322.44 = 438,885.36 : x
  2. Step 2: Convert to fraction form
    778,482.72/1,074,322.44 = 438,885.36/x
  3. Step 3: Cross multiply
    778,482.72x = 1,074,322.44 × 438,885.36
  4. Step 4: Simplify right side
    778,482.72x = 471,504,390,835.48
  5. Step 5: Solve for x
    x = 471,504,390,835.48/778,482.72
  6. Step 6: Final answer
    x = 605,670.98

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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.