Home / 420,116.37-579,595.55-258,691.47

Finding the Fourth Proportional to 420,116.37, 579,595.55 and 258,691.47

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Solution

The fourth proportional to 420,116.37, 579,595.55 and 258,691.47 is: 356,892.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,116.37 : 579,595.55 = 258,691.47 : x
  2. Step 2: Convert to fraction form
    420,116.37/579,595.55 = 258,691.47/x
  3. Step 3: Cross multiply
    420,116.37x = 579,595.55 × 258,691.47
  4. Step 4: Simplify right side
    420,116.37x = 149,936,423,541.50
  5. Step 5: Solve for x
    x = 149,936,423,541.50/420,116.37
  6. Step 6: Final answer
    x = 356,892.60

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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.