Home / 387,002.10-580,503.15-261,030.90

Finding the Fourth Proportional to 387,002.10, 580,503.15 and 261,030.90

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Solution

The fourth proportional to 387,002.10, 580,503.15 and 261,030.90 is: 391,546.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,002.10 : 580,503.15 = 261,030.90 : x
  2. Step 2: Convert to fraction form
    387,002.10/580,503.15 = 261,030.90/x
  3. Step 3: Cross multiply
    387,002.10x = 580,503.15 × 261,030.90
  4. Step 4: Simplify right side
    387,002.10x = 151,529,259,697.34
  5. Step 5: Solve for x
    x = 151,529,259,697.34/387,002.10
  6. Step 6: Final answer
    x = 391,546.35

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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.