Home / 644,343.03-889,211.88-357,881.58

Finding the Fourth Proportional to 644,343.03, 889,211.88 and 357,881.58

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Solution

The fourth proportional to 644,343.03, 889,211.88 and 357,881.58 is: 493,886.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,343.03 : 889,211.88 = 357,881.58 : x
  2. Step 2: Convert to fraction form
    644,343.03/889,211.88 = 357,881.58/x
  3. Step 3: Cross multiply
    644,343.03x = 889,211.88 × 357,881.58
  4. Step 4: Simplify right side
    644,343.03x = 318,232,552,569.17
  5. Step 5: Solve for x
    x = 318,232,552,569.17/644,343.03
  6. Step 6: Final answer
    x = 493,886.85

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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.