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Finding the Fourth Proportional to 668,883.60, 1,001,770.20 and 457,376.40

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Solution

The fourth proportional to 668,883.60, 1,001,770.20 and 457,376.40 is: 685,001.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,883.60 : 1,001,770.20 = 457,376.40 : x
  2. Step 2: Convert to fraction form
    668,883.60/1,001,770.20 = 457,376.40/x
  3. Step 3: Cross multiply
    668,883.60x = 1,001,770.20 × 457,376.40
  4. Step 4: Simplify right side
    668,883.60x = 458,186,047,703.28
  5. Step 5: Solve for x
    x = 458,186,047,703.28/668,883.60
  6. Step 6: Final answer
    x = 685,001.17

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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.