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Finding the Fourth Proportional to 564,712.38, 779,314.23 and 310,061.34

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Solution

The fourth proportional to 564,712.38, 779,314.23 and 310,061.34 is: 427,890.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,712.38 : 779,314.23 = 310,061.34 : x
  2. Step 2: Convert to fraction form
    564,712.38/779,314.23 = 310,061.34/x
  3. Step 3: Cross multiply
    564,712.38x = 779,314.23 × 310,061.34
  4. Step 4: Simplify right side
    564,712.38x = 241,635,214,434.87
  5. Step 5: Solve for x
    x = 241,635,214,434.87/564,712.38
  6. Step 6: Final answer
    x = 427,890.77

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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.