Home / 724,312.82-1,087,535.69-405,090.10

Finding the Fourth Proportional to 724,312.82, 1,087,535.69 and 405,090.10

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Solution

The fourth proportional to 724,312.82, 1,087,535.69 and 405,090.10 is: 608,231.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,312.82 : 1,087,535.69 = 405,090.10 : x
  2. Step 2: Convert to fraction form
    724,312.82/1,087,535.69 = 405,090.10/x
  3. Step 3: Cross multiply
    724,312.82x = 1,087,535.69 × 405,090.10
  4. Step 4: Simplify right side
    724,312.82x = 440,549,935,977.99
  5. Step 5: Solve for x
    x = 440,549,935,977.99/724,312.82
  6. Step 6: Final answer
    x = 608,231.59

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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.