Home / 724,634.29-1,000,118.31-418,887.91

Finding the Fourth Proportional to 724,634.29, 1,000,118.31 and 418,887.91

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Solution

The fourth proportional to 724,634.29, 1,000,118.31 and 418,887.91 is: 578,136.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,634.29 : 1,000,118.31 = 418,887.91 : x
  2. Step 2: Convert to fraction form
    724,634.29/1,000,118.31 = 418,887.91/x
  3. Step 3: Cross multiply
    724,634.29x = 1,000,118.31 × 418,887.91
  4. Step 4: Simplify right side
    724,634.29x = 418,937,462,682.29
  5. Step 5: Solve for x
    x = 418,937,462,682.29/724,634.29
  6. Step 6: Final answer
    x = 578,136.41

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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.