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Finding the Fourth Proportional to 867,242.56, 1,300,865.28 and 569,603.20

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Solution

The fourth proportional to 867,242.56, 1,300,865.28 and 569,603.20 is: 854,405.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,242.56 : 1,300,865.28 = 569,603.20 : x
  2. Step 2: Convert to fraction form
    867,242.56/1,300,865.28 = 569,603.20/x
  3. Step 3: Cross multiply
    867,242.56x = 1,300,865.28 × 569,603.20
  4. Step 4: Simplify right side
    867,242.56x = 740,977,026,256.90
  5. Step 5: Solve for x
    x = 740,977,026,256.90/867,242.56
  6. Step 6: Final answer
    x = 854,405.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.