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Finding the Fourth Proportional to 612,279.93, 917,547.69 and 451,088.21

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Solution

The fourth proportional to 612,279.93, 917,547.69 and 451,088.21 is: 675,989.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,279.93 : 917,547.69 = 451,088.21 : x
  2. Step 2: Convert to fraction form
    612,279.93/917,547.69 = 451,088.21/x
  3. Step 3: Cross multiply
    612,279.93x = 917,547.69 × 451,088.21
  4. Step 4: Simplify right side
    612,279.93x = 413,894,945,071.74
  5. Step 5: Solve for x
    x = 413,894,945,071.74/612,279.93
  6. Step 6: Final answer
    x = 675,989.73

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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.