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Finding the Fourth Proportional to 545,860, 753,291.68 and 319,510.36

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Solution

The fourth proportional to 545,860, 753,291.68 and 319,510.36 is: 440,927.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,860 : 753,291.68 = 319,510.36 : x
  2. Step 2: Convert to fraction form
    545,860/753,291.68 = 319,510.36/x
  3. Step 3: Cross multiply
    545,860x = 753,291.68 × 319,510.36
  4. Step 4: Simplify right side
    545,860x = 240,684,495,861.81
  5. Step 5: Solve for x
    x = 240,684,495,861.81/545,860
  6. Step 6: Final answer
    x = 440,927.15

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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.