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Finding the Fourth Proportional to 633,143.66, 873,738.09 and 346,663.67

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Solution

The fourth proportional to 633,143.66, 873,738.09 and 346,663.67 is: 478,395.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,143.66 : 873,738.09 = 346,663.67 : x
  2. Step 2: Convert to fraction form
    633,143.66/873,738.09 = 346,663.67/x
  3. Step 3: Cross multiply
    633,143.66x = 873,738.09 × 346,663.67
  4. Step 4: Simplify right side
    633,143.66x = 302,893,248,529.50
  5. Step 5: Solve for x
    x = 302,893,248,529.50/633,143.66
  6. Step 6: Final answer
    x = 478,395.77

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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.