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Finding the Fourth Proportional to 668,001.57, 921,940.65 and 423,008.69

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Solution

The fourth proportional to 668,001.57, 921,940.65 and 423,008.69 is: 583,814.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,001.57 : 921,940.65 = 423,008.69 : x
  2. Step 2: Convert to fraction form
    668,001.57/921,940.65 = 423,008.69/x
  3. Step 3: Cross multiply
    668,001.57x = 921,940.65 × 423,008.69
  4. Step 4: Simplify right side
    668,001.57x = 389,988,902,004.55
  5. Step 5: Solve for x
    x = 389,988,902,004.55/668,001.57
  6. Step 6: Final answer
    x = 583,814.35

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1.5x scale

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.