Home / 644,504.04-889,385.40-358,041.60

Finding the Fourth Proportional to 644,504.04, 889,385.40 and 358,041.60

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Solution

The fourth proportional to 644,504.04, 889,385.40 and 358,041.60 is: 494,080.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,504.04 : 889,385.40 = 358,041.60 : x
  2. Step 2: Convert to fraction form
    644,504.04/889,385.40 = 358,041.60/x
  3. Step 3: Cross multiply
    644,504.04x = 889,385.40 × 358,041.60
  4. Step 4: Simplify right side
    644,504.04x = 318,436,971,632.64
  5. Step 5: Solve for x
    x = 318,436,971,632.64/644,504.04
  6. Step 6: Final answer
    x = 494,080.64

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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.