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Finding the Fourth Proportional to 553,039.89, 763,430.96 and 371,856.84

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Solution

The fourth proportional to 553,039.89, 763,430.96 and 371,856.84 is: 513,321.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,039.89 : 763,430.96 = 371,856.84 : x
  2. Step 2: Convert to fraction form
    553,039.89/763,430.96 = 371,856.84/x
  3. Step 3: Cross multiply
    553,039.89x = 763,430.96 × 371,856.84
  4. Step 4: Simplify right side
    553,039.89x = 283,887,022,484.48
  5. Step 5: Solve for x
    x = 283,887,022,484.48/553,039.89
  6. Step 6: Final answer
    x = 513,321.06

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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.