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Finding the Fourth Proportional to 609,639.08, 841,712.68 and 380,545.16

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Solution

The fourth proportional to 609,639.08, 841,712.68 and 380,545.16 is: 525,408.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,639.08 : 841,712.68 = 380,545.16 : x
  2. Step 2: Convert to fraction form
    609,639.08/841,712.68 = 380,545.16/x
  3. Step 3: Cross multiply
    609,639.08x = 841,712.68 × 380,545.16
  4. Step 4: Simplify right side
    609,639.08x = 320,309,686,484.63
  5. Step 5: Solve for x
    x = 320,309,686,484.63/609,639.08
  6. Step 6: Final answer
    x = 525,408.72

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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.