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Finding the Fourth Proportional to 761,079, 1,050,289.02 and 421,569.12

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Solution

The fourth proportional to 761,079, 1,050,289.02 and 421,569.12 is: 581,765.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,079 : 1,050,289.02 = 421,569.12 : x
  2. Step 2: Convert to fraction form
    761,079/1,050,289.02 = 421,569.12/x
  3. Step 3: Cross multiply
    761,079x = 1,050,289.02 × 421,569.12
  4. Step 4: Simplify right side
    761,079x = 442,769,417,907.06
  5. Step 5: Solve for x
    x = 442,769,417,907.06/761,079
  6. Step 6: Final answer
    x = 581,765.39

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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.