Home / 664,140.96-916,477.20-377,730.72

Finding the Fourth Proportional to 664,140.96, 916,477.20 and 377,730.72

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Solution

The fourth proportional to 664,140.96, 916,477.20 and 377,730.72 is: 521,247.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,140.96 : 916,477.20 = 377,730.72 : x
  2. Step 2: Convert to fraction form
    664,140.96/916,477.20 = 377,730.72/x
  3. Step 3: Cross multiply
    664,140.96x = 916,477.20 × 377,730.72
  4. Step 4: Simplify right side
    664,140.96x = 346,181,592,619.58
  5. Step 5: Solve for x
    x = 346,181,592,619.58/664,140.96
  6. Step 6: Final answer
    x = 521,247.17

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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.