Home / 665,305.04-918,121.35-359,381.45

Finding the Fourth Proportional to 665,305.04, 918,121.35 and 359,381.45

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Solution

The fourth proportional to 665,305.04, 918,121.35 and 359,381.45 is: 495,946.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,305.04 : 918,121.35 = 359,381.45 : x
  2. Step 2: Convert to fraction form
    665,305.04/918,121.35 = 359,381.45/x
  3. Step 3: Cross multiply
    665,305.04x = 918,121.35 × 359,381.45
  4. Step 4: Simplify right side
    665,305.04x = 329,955,782,038.96
  5. Step 5: Solve for x
    x = 329,955,782,038.96/665,305.04
  6. Step 6: Final answer
    x = 495,946.61

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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.