Home / 644,282.12-889,084.98-357,820.67

Finding the Fourth Proportional to 644,282.12, 889,084.98 and 357,820.67

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Solution

The fourth proportional to 644,282.12, 889,084.98 and 357,820.67 is: 493,779.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,282.12 : 889,084.98 = 357,820.67 : x
  2. Step 2: Convert to fraction form
    644,282.12/889,084.98 = 357,820.67/x
  3. Step 3: Cross multiply
    644,282.12x = 889,084.98 × 357,820.67
  4. Step 4: Simplify right side
    644,282.12x = 318,132,978,785.11
  5. Step 5: Solve for x
    x = 318,132,978,785.11/644,282.12
  6. Step 6: Final answer
    x = 493,779.00

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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.