Home / 778,500.18-1,074,330.36-438,968.34

Finding the Fourth Proportional to 778,500.18, 1,074,330.36 and 438,968.34

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Solution

The fourth proportional to 778,500.18, 1,074,330.36 and 438,968.34 is: 605,776.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,500.18 : 1,074,330.36 = 438,968.34 : x
  2. Step 2: Convert to fraction form
    778,500.18/1,074,330.36 = 438,968.34/x
  3. Step 3: Cross multiply
    778,500.18x = 1,074,330.36 × 438,968.34
  4. Step 4: Simplify right side
    778,500.18x = 471,597,014,740.80
  5. Step 5: Solve for x
    x = 471,597,014,740.80/778,500.18
  6. Step 6: Final answer
    x = 605,776.37

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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.