Home / 578,021.40-867,032.10-298,085.40

Finding the Fourth Proportional to 578,021.40, 867,032.10 and 298,085.40

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Solution

The fourth proportional to 578,021.40, 867,032.10 and 298,085.40 is: 447,128.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,021.40 : 867,032.10 = 298,085.40 : x
  2. Step 2: Convert to fraction form
    578,021.40/867,032.10 = 298,085.40/x
  3. Step 3: Cross multiply
    578,021.40x = 867,032.10 × 298,085.40
  4. Step 4: Simplify right side
    578,021.40x = 258,449,610,341.34
  5. Step 5: Solve for x
    x = 258,449,610,341.34/578,021.40
  6. Step 6: Final answer
    x = 447,128.10

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.