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Finding the Fourth Proportional to 455,808.15, 683,712.23 and 403,320.15

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Solution

The fourth proportional to 455,808.15, 683,712.23 and 403,320.15 is: 604,980.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,808.15 : 683,712.23 = 403,320.15 : x
  2. Step 2: Convert to fraction form
    455,808.15/683,712.23 = 403,320.15/x
  3. Step 3: Cross multiply
    455,808.15x = 683,712.23 × 403,320.15
  4. Step 4: Simplify right side
    455,808.15x = 275,754,917,143.83
  5. Step 5: Solve for x
    x = 275,754,917,143.83/455,808.15
  6. Step 6: Final answer
    x = 604,980.23

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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.