Home / 691,808.14-954,549.40-420,018.94

Finding the Fourth Proportional to 691,808.14, 954,549.40 and 420,018.94

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Solution

The fourth proportional to 691,808.14, 954,549.40 and 420,018.94 is: 579,537.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,808.14 : 954,549.40 = 420,018.94 : x
  2. Step 2: Convert to fraction form
    691,808.14/954,549.40 = 420,018.94/x
  3. Step 3: Cross multiply
    691,808.14x = 954,549.40 × 420,018.94
  4. Step 4: Simplify right side
    691,808.14x = 400,928,827,165.64
  5. Step 5: Solve for x
    x = 400,928,827,165.64/691,808.14
  6. Step 6: Final answer
    x = 579,537.60

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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.