Home / 641,580.12-885,369.84-355,094.10

Finding the Fourth Proportional to 641,580.12, 885,369.84 and 355,094.10

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Solution

The fourth proportional to 641,580.12, 885,369.84 and 355,094.10 is: 490,023.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,580.12 : 885,369.84 = 355,094.10 : x
  2. Step 2: Convert to fraction form
    641,580.12/885,369.84 = 355,094.10/x
  3. Step 3: Cross multiply
    641,580.12x = 885,369.84 × 355,094.10
  4. Step 4: Simplify right side
    641,580.12x = 314,389,606,501.94
  5. Step 5: Solve for x
    x = 314,389,606,501.94/641,580.12
  6. Step 6: Final answer
    x = 490,023.92

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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.