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Finding the Fourth Proportional to 545,637.88, 753,018.10 and 330,787

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Solution

The fourth proportional to 545,637.88, 753,018.10 and 330,787 is: 456,508.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,637.88 : 753,018.10 = 330,787 : x
  2. Step 2: Convert to fraction form
    545,637.88/753,018.10 = 330,787/x
  3. Step 3: Cross multiply
    545,637.88x = 753,018.10 × 330,787
  4. Step 4: Simplify right side
    545,637.88x = 249,088,598,244.70
  5. Step 5: Solve for x
    x = 249,088,598,244.70/545,637.88
  6. Step 6: Final answer
    x = 456,508.99

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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.