Home / 420,341.94-579,394.08-284,326.20

Finding the Fourth Proportional to 420,341.94, 579,394.08 and 284,326.20

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Solution

The fourth proportional to 420,341.94, 579,394.08 and 284,326.20 is: 391,911.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,341.94 : 579,394.08 = 284,326.20 : x
  2. Step 2: Convert to fraction form
    420,341.94/579,394.08 = 284,326.20/x
  3. Step 3: Cross multiply
    420,341.94x = 579,394.08 × 284,326.20
  4. Step 4: Simplify right side
    420,341.94x = 164,736,917,068.90
  5. Step 5: Solve for x
    x = 164,736,917,068.90/420,341.94
  6. Step 6: Final answer
    x = 391,911.68

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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.