Home / 646,126.21-891,654.20-359,640.16

Finding the Fourth Proportional to 646,126.21, 891,654.20 and 359,640.16

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Solution

The fourth proportional to 646,126.21, 891,654.20 and 359,640.16 is: 496,303.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,126.21 : 891,654.20 = 359,640.16 : x
  2. Step 2: Convert to fraction form
    646,126.21/891,654.20 = 359,640.16/x
  3. Step 3: Cross multiply
    646,126.21x = 891,654.20 × 359,640.16
  4. Step 4: Simplify right side
    646,126.21x = 320,674,659,152.67
  5. Step 5: Solve for x
    x = 320,674,659,152.67/646,126.21
  6. Step 6: Final answer
    x = 496,303.44

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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.