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Finding the Fourth Proportional to 761,482.60, 1,141,215.90 and 405,730.60

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Solution

The fourth proportional to 761,482.60, 1,141,215.90 and 405,730.60 is: 608,058.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,482.60 : 1,141,215.90 = 405,730.60 : x
  2. Step 2: Convert to fraction form
    761,482.60/1,141,215.90 = 405,730.60/x
  3. Step 3: Cross multiply
    761,482.60x = 1,141,215.90 × 405,730.60
  4. Step 4: Simplify right side
    761,482.60x = 463,026,211,836.54
  5. Step 5: Solve for x
    x = 463,026,211,836.54/761,482.60
  6. Step 6: Final answer
    x = 608,058.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.