Home / 818,646.48-1,226,938.32-438,624.72

Finding the Fourth Proportional to 818,646.48, 1,226,938.32 and 438,624.72

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Solution

The fourth proportional to 818,646.48, 1,226,938.32 and 438,624.72 is: 657,384.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,646.48 : 1,226,938.32 = 438,624.72 : x
  2. Step 2: Convert to fraction form
    818,646.48/1,226,938.32 = 438,624.72/x
  3. Step 3: Cross multiply
    818,646.48x = 1,226,938.32 × 438,624.72
  4. Step 4: Simplify right side
    818,646.48x = 538,165,477,067.27
  5. Step 5: Solve for x
    x = 538,165,477,067.27/818,646.48
  6. Step 6: Final answer
    x = 657,384.46

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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.