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Finding the Fourth Proportional to 564,687.72, 779,270.58 and 310,055.40

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Solution

The fourth proportional to 564,687.72, 779,270.58 and 310,055.40 is: 427,877.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,687.72 : 779,270.58 = 310,055.40 : x
  2. Step 2: Convert to fraction form
    564,687.72/779,270.58 = 310,055.40/x
  3. Step 3: Cross multiply
    564,687.72x = 779,270.58 × 310,055.40
  4. Step 4: Simplify right side
    564,687.72x = 241,617,051,390.13
  5. Step 5: Solve for x
    x = 241,617,051,390.13/564,687.72
  6. Step 6: Final answer
    x = 427,877.29

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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.