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Finding the Fourth Proportional to 623,370.77, 860,678.57 and 397,322.45

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Solution

The fourth proportional to 623,370.77, 860,678.57 and 397,322.45 is: 548,577.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,370.77 : 860,678.57 = 397,322.45 : x
  2. Step 2: Convert to fraction form
    623,370.77/860,678.57 = 397,322.45/x
  3. Step 3: Cross multiply
    623,370.77x = 860,678.57 × 397,322.45
  4. Step 4: Simplify right side
    623,370.77x = 341,966,916,108.28
  5. Step 5: Solve for x
    x = 341,966,916,108.28/623,370.77
  6. Step 6: Final answer
    x = 548,577.08

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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.