Home / 400,780.29-553,083.05-219,488.93

Finding the Fourth Proportional to 400,780.29, 553,083.05 and 219,488.93

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Solution

The fourth proportional to 400,780.29, 553,083.05 and 219,488.93 is: 302,898.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,780.29 : 553,083.05 = 219,488.93 : x
  2. Step 2: Convert to fraction form
    400,780.29/553,083.05 = 219,488.93/x
  3. Step 3: Cross multiply
    400,780.29x = 553,083.05 × 219,488.93
  4. Step 4: Simplify right side
    400,780.29x = 121,395,606,845.64
  5. Step 5: Solve for x
    x = 121,395,606,845.64/400,780.29
  6. Step 6: Final answer
    x = 302,898.15

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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.