Home / 646,117.46-891,642.12-359,631.38

Finding the Fourth Proportional to 646,117.46, 891,642.12 and 359,631.38

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Solution

The fourth proportional to 646,117.46, 891,642.12 and 359,631.38 is: 496,291.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,117.46 : 891,642.12 = 359,631.38 : x
  2. Step 2: Convert to fraction form
    646,117.46/891,642.12 = 359,631.38/x
  3. Step 3: Cross multiply
    646,117.46x = 891,642.12 × 359,631.38
  4. Step 4: Simplify right side
    646,117.46x = 320,662,486,081.73
  5. Step 5: Solve for x
    x = 320,662,486,081.73/646,117.46
  6. Step 6: Final answer
    x = 496,291.32

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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.