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Finding the Fourth Proportional to 515,621.61, 773,420.54 and 303,733.67

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Solution

The fourth proportional to 515,621.61, 773,420.54 and 303,733.67 is: 455,593.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,621.61 : 773,420.54 = 303,733.67 : x
  2. Step 2: Convert to fraction form
    515,621.61/773,420.54 = 303,733.67/x
  3. Step 3: Cross multiply
    515,621.61x = 773,420.54 × 303,733.67
  4. Step 4: Simplify right side
    515,621.61x = 234,913,853,681.81
  5. Step 5: Solve for x
    x = 234,913,853,681.81/515,621.61
  6. Step 6: Final answer
    x = 455,593.50

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1.5x scale

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.