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Finding the Fourth Proportional to 668,802.74, 1,003,385.16 and 476,919.63

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Solution

The fourth proportional to 668,802.74, 1,003,385.16 and 476,919.63 is: 715,508.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,802.74 : 1,003,385.16 = 476,919.63 : x
  2. Step 2: Convert to fraction form
    668,802.74/1,003,385.16 = 476,919.63/x
  3. Step 3: Cross multiply
    668,802.74x = 1,003,385.16 × 476,919.63
  4. Step 4: Simplify right side
    668,802.74x = 478,534,079,254.69
  5. Step 5: Solve for x
    x = 478,534,079,254.69/668,802.74
  6. Step 6: Final answer
    x = 715,508.56

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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.