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Finding the Fourth Proportional to 626,875.64, 865,066.02 and 340,389.80

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Solution

The fourth proportional to 626,875.64, 865,066.02 and 340,389.80 is: 469,725.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,875.64 : 865,066.02 = 340,389.80 : x
  2. Step 2: Convert to fraction form
    626,875.64/865,066.02 = 340,389.80/x
  3. Step 3: Cross multiply
    626,875.64x = 865,066.02 × 340,389.80
  4. Step 4: Simplify right side
    626,875.64x = 294,459,649,534.60
  5. Step 5: Solve for x
    x = 294,459,649,534.60/626,875.64
  6. Step 6: Final answer
    x = 469,725.78

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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.