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Finding the Fourth Proportional to 626,560.32, 938,656.80 and 485,628.96

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Solution

The fourth proportional to 626,560.32, 938,656.80 and 485,628.96 is: 727,526.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,560.32 : 938,656.80 = 485,628.96 : x
  2. Step 2: Convert to fraction form
    626,560.32/938,656.80 = 485,628.96/x
  3. Step 3: Cross multiply
    626,560.32x = 938,656.80 × 485,628.96
  4. Step 4: Simplify right side
    626,560.32x = 455,838,925,580.93
  5. Step 5: Solve for x
    x = 455,838,925,580.93/626,560.32
  6. Step 6: Final answer
    x = 727,526.00

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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.