Home / 621,141.81-930,762.35-417,985.56

Finding the Fourth Proportional to 621,141.81, 930,762.35 and 417,985.56

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Solution

The fourth proportional to 621,141.81, 930,762.35 and 417,985.56 is: 626,338.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,141.81 : 930,762.35 = 417,985.56 : x
  2. Step 2: Convert to fraction form
    621,141.81/930,762.35 = 417,985.56/x
  3. Step 3: Cross multiply
    621,141.81x = 930,762.35 × 417,985.56
  4. Step 4: Simplify right side
    621,141.81x = 389,045,226,626.99
  5. Step 5: Solve for x
    x = 389,045,226,626.99/621,141.81
  6. Step 6: Final answer
    x = 626,338.82

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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.