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Finding the Fourth Proportional to 625,699.56, 938,783.88 and 288,901.56

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Solution

The fourth proportional to 625,699.56, 938,783.88 and 288,901.56 is: 433,460.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,699.56 : 938,783.88 = 288,901.56 : x
  2. Step 2: Convert to fraction form
    625,699.56/938,783.88 = 288,901.56/x
  3. Step 3: Cross multiply
    625,699.56x = 938,783.88 × 288,901.56
  4. Step 4: Simplify right side
    625,699.56x = 271,216,127,434.85
  5. Step 5: Solve for x
    x = 271,216,127,434.85/625,699.56
  6. Step 6: Final answer
    x = 433,460.63

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1.5x scale

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.