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Finding the Fourth Proportional to 545,886.64, 753,339.41 and 316,444.87

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Solution

The fourth proportional to 545,886.64, 753,339.41 and 316,444.87 is: 436,703.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,886.64 : 753,339.41 = 316,444.87 : x
  2. Step 2: Convert to fraction form
    545,886.64/753,339.41 = 316,444.87/x
  3. Step 3: Cross multiply
    545,886.64x = 753,339.41 × 316,444.87
  4. Step 4: Simplify right side
    545,886.64x = 238,390,391,663.33
  5. Step 5: Solve for x
    x = 238,390,391,663.33/545,886.64
  6. Step 6: Final answer
    x = 436,703.11

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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.