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Finding the Fourth Proportional to 610,607.20, 843,054.96 and 381,513.28

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Solution

The fourth proportional to 610,607.20, 843,054.96 and 381,513.28 is: 526,748.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,607.20 : 843,054.96 = 381,513.28 : x
  2. Step 2: Convert to fraction form
    610,607.20/843,054.96 = 381,513.28/x
  3. Step 3: Cross multiply
    610,607.20x = 843,054.96 × 381,513.28
  4. Step 4: Simplify right side
    610,607.20x = 321,636,663,009.87
  5. Step 5: Solve for x
    x = 321,636,663,009.87/610,607.20
  6. Step 6: Final answer
    x = 526,748.89

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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.