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Finding the Fourth Proportional to 1,279,961.06, 1,766,312.43 and 706,988.93

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Solution

The fourth proportional to 1,279,961.06, 1,766,312.43 and 706,988.93 is: 975,626.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,961.06 : 1,766,312.43 = 706,988.93 : x
  2. Step 2: Convert to fraction form
    1,279,961.06/1,766,312.43 = 706,988.93/x
  3. Step 3: Cross multiply
    1,279,961.06x = 1,766,312.43 × 706,988.93
  4. Step 4: Simplify right side
    1,279,961.06x = 1,248,763,334,931.40
  5. Step 5: Solve for x
    x = 1,248,763,334,931.40/1,279,961.06
  6. Step 6: Final answer
    x = 975,626.04

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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.