Home / 644,721.68-889,675.08-358,225.04

Finding the Fourth Proportional to 644,721.68, 889,675.08 and 358,225.04

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Solution

The fourth proportional to 644,721.68, 889,675.08 and 358,225.04 is: 494,327.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,721.68 : 889,675.08 = 358,225.04 : x
  2. Step 2: Convert to fraction form
    644,721.68/889,675.08 = 358,225.04/x
  3. Step 3: Cross multiply
    644,721.68x = 889,675.08 × 358,225.04
  4. Step 4: Simplify right side
    644,721.68x = 318,703,891,120.00
  5. Step 5: Solve for x
    x = 318,703,891,120.00/644,721.68
  6. Step 6: Final answer
    x = 494,327.86

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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.