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Finding the Fourth Proportional to 875,028, 1,207,539.45 and 472,620

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Solution

The fourth proportional to 875,028, 1,207,539.45 and 472,620 is: 652,216.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,028 : 1,207,539.45 = 472,620 : x
  2. Step 2: Convert to fraction form
    875,028/1,207,539.45 = 472,620/x
  3. Step 3: Cross multiply
    875,028x = 1,207,539.45 × 472,620
  4. Step 4: Simplify right side
    875,028x = 570,707,294,859
  5. Step 5: Solve for x
    x = 570,707,294,859/875,028
  6. Step 6: Final answer
    x = 652,216.04

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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.