Home / 665,814.46-918,828.12-359,890.22

Finding the Fourth Proportional to 665,814.46, 918,828.12 and 359,890.22

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Solution

The fourth proportional to 665,814.46, 918,828.12 and 359,890.22 is: 496,650.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,814.46 : 918,828.12 = 359,890.22 : x
  2. Step 2: Convert to fraction form
    665,814.46/918,828.12 = 359,890.22/x
  3. Step 3: Cross multiply
    665,814.46x = 918,828.12 × 359,890.22
  4. Step 4: Simplify right side
    665,814.46x = 330,677,254,248.99
  5. Step 5: Solve for x
    x = 330,677,254,248.99/665,814.46
  6. Step 6: Final answer
    x = 496,650.76

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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.