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Finding the Fourth Proportional to 528,750.95, 729,688.64 and 313,891.83

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Solution

The fourth proportional to 528,750.95, 729,688.64 and 313,891.83 is: 433,178.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,750.95 : 729,688.64 = 313,891.83 : x
  2. Step 2: Convert to fraction form
    528,750.95/729,688.64 = 313,891.83/x
  3. Step 3: Cross multiply
    528,750.95x = 729,688.64 × 313,891.83
  4. Step 4: Simplify right side
    528,750.95x = 229,043,300,970.35
  5. Step 5: Solve for x
    x = 229,043,300,970.35/528,750.95
  6. Step 6: Final answer
    x = 433,178.05

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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.