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Finding the Fourth Proportional to 526,989.58, 790,041.38 and 426,901.57

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Solution

The fourth proportional to 526,989.58, 790,041.38 and 426,901.57 is: 639,993.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,989.58 : 790,041.38 = 426,901.57 : x
  2. Step 2: Convert to fraction form
    526,989.58/790,041.38 = 426,901.57/x
  3. Step 3: Cross multiply
    526,989.58x = 790,041.38 × 426,901.57
  4. Step 4: Simplify right side
    526,989.58x = 337,269,905,486.97
  5. Step 5: Solve for x
    x = 337,269,905,486.97/526,989.58
  6. Step 6: Final answer
    x = 639,993.50

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Double scale
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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.