Home / 521,621.10-731,319.30-521,621.10

Finding the Fourth Proportional to 521,621.10, 731,319.30 and 521,621.10

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Solution

The fourth proportional to 521,621.10, 731,319.30 and 521,621.10 is: 731,319.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,621.10 : 731,319.30 = 521,621.10 : x
  2. Step 2: Convert to fraction form
    521,621.10/731,319.30 = 521,621.10/x
  3. Step 3: Cross multiply
    521,621.10x = 731,319.30 × 521,621.10
  4. Step 4: Simplify right side
    521,621.10x = 381,471,577,717.23
  5. Step 5: Solve for x
    x = 381,471,577,717.23/521,621.10
  6. Step 6: Final answer
    x = 731,319.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.