Home / 674,911.08-931,562.10-420,111

Finding the Fourth Proportional to 674,911.08, 931,562.10 and 420,111

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Solution

The fourth proportional to 674,911.08, 931,562.10 and 420,111 is: 579,868.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,911.08 : 931,562.10 = 420,111 : x
  2. Step 2: Convert to fraction form
    674,911.08/931,562.10 = 420,111/x
  3. Step 3: Cross multiply
    674,911.08x = 931,562.10 × 420,111
  4. Step 4: Simplify right side
    674,911.08x = 391,359,485,393.10
  5. Step 5: Solve for x
    x = 391,359,485,393.10/674,911.08
  6. Step 6: Final answer
    x = 579,868.22

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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.