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Finding the Fourth Proportional to 564,688.22, 779,271.27 and 310,055.90

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Solution

The fourth proportional to 564,688.22, 779,271.27 and 310,055.90 is: 427,877.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,688.22 : 779,271.27 = 310,055.90 : x
  2. Step 2: Convert to fraction form
    564,688.22/779,271.27 = 310,055.90/x
  3. Step 3: Cross multiply
    564,688.22x = 779,271.27 × 310,055.90
  4. Step 4: Simplify right side
    564,688.22x = 241,617,654,963.99
  5. Step 5: Solve for x
    x = 241,617,654,963.99/564,688.22
  6. Step 6: Final answer
    x = 427,877.98

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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.