Home / 763,123.11-1,053,057.18-423,564.63

Finding the Fourth Proportional to 763,123.11, 1,053,057.18 and 423,564.63

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Solution

The fourth proportional to 763,123.11, 1,053,057.18 and 423,564.63 is: 584,489.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,123.11 : 1,053,057.18 = 423,564.63 : x
  2. Step 2: Convert to fraction form
    763,123.11/1,053,057.18 = 423,564.63/x
  3. Step 3: Cross multiply
    763,123.11x = 1,053,057.18 × 423,564.63
  4. Step 4: Simplify right side
    763,123.11x = 446,037,774,815.54
  5. Step 5: Solve for x
    x = 446,037,774,815.54/763,123.11
  6. Step 6: Final answer
    x = 584,489.93

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Double scale
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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.