Home / 644,736.26-889,365.47-402,598.50

Finding the Fourth Proportional to 644,736.26, 889,365.47 and 402,598.50

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Solution

The fourth proportional to 644,736.26, 889,365.47 and 402,598.50 is: 555,354.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,736.26 : 889,365.47 = 402,598.50 : x
  2. Step 2: Convert to fraction form
    644,736.26/889,365.47 = 402,598.50/x
  3. Step 3: Cross multiply
    644,736.26x = 889,365.47 × 402,598.50
  4. Step 4: Simplify right side
    644,736.26x = 358,057,204,173.80
  5. Step 5: Solve for x
    x = 358,057,204,173.80/644,736.26
  6. Step 6: Final answer
    x = 555,354.53

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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.