Home / 818,648.48-1,226,941.32-438,626.72

Finding the Fourth Proportional to 818,648.48, 1,226,941.32 and 438,626.72

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Solution

The fourth proportional to 818,648.48, 1,226,941.32 and 438,626.72 is: 657,387.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,648.48 : 1,226,941.32 = 438,626.72 : x
  2. Step 2: Convert to fraction form
    818,648.48/1,226,941.32 = 438,626.72/x
  3. Step 3: Cross multiply
    818,648.48x = 1,226,941.32 × 438,626.72
  4. Step 4: Simplify right side
    818,648.48x = 538,169,246,824.07
  5. Step 5: Solve for x
    x = 538,169,246,824.07/818,648.48
  6. Step 6: Final answer
    x = 657,387.46

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.