Home / 564,105.03-778,477.11-309,456.21

Finding the Fourth Proportional to 564,105.03, 778,477.11 and 309,456.21

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Solution

The fourth proportional to 564,105.03, 778,477.11 and 309,456.21 is: 427,056.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,105.03 : 778,477.11 = 309,456.21 : x
  2. Step 2: Convert to fraction form
    564,105.03/778,477.11 = 309,456.21/x
  3. Step 3: Cross multiply
    564,105.03x = 778,477.11 × 309,456.21
  4. Step 4: Simplify right side
    564,105.03x = 240,904,576,032.35
  5. Step 5: Solve for x
    x = 240,904,576,032.35/564,105.03
  6. Step 6: Final answer
    x = 427,056.25

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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.