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Finding the Fourth Proportional to 647,409.72, 893,407.80 and 375,460.32

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Solution

The fourth proportional to 647,409.72, 893,407.80 and 375,460.32 is: 518,125.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,409.72 : 893,407.80 = 375,460.32 : x
  2. Step 2: Convert to fraction form
    647,409.72/893,407.80 = 375,460.32/x
  3. Step 3: Cross multiply
    647,409.72x = 893,407.80 × 375,460.32
  4. Step 4: Simplify right side
    647,409.72x = 335,439,178,478.50
  5. Step 5: Solve for x
    x = 335,439,178,478.50/647,409.72
  6. Step 6: Final answer
    x = 518,125.03

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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.