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Finding the Fourth Proportional to 761,875.76, 1,051,398.12 and 439,652.72

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Solution

The fourth proportional to 761,875.76, 1,051,398.12 and 439,652.72 is: 606,726.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,875.76 : 1,051,398.12 = 439,652.72 : x
  2. Step 2: Convert to fraction form
    761,875.76/1,051,398.12 = 439,652.72/x
  3. Step 3: Cross multiply
    761,875.76x = 1,051,398.12 × 439,652.72
  4. Step 4: Simplify right side
    761,875.76x = 462,250,043,260.89
  5. Step 5: Solve for x
    x = 462,250,043,260.89/761,875.76
  6. Step 6: Final answer
    x = 606,726.28

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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.