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Finding the Fourth Proportional to 641,583.45, 963,620.74 and 472,435.74

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Solution

The fourth proportional to 641,583.45, 963,620.74 and 472,435.74 is: 709,570.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,583.45 : 963,620.74 = 472,435.74 : x
  2. Step 2: Convert to fraction form
    641,583.45/963,620.74 = 472,435.74/x
  3. Step 3: Cross multiply
    641,583.45x = 963,620.74 × 472,435.74
  4. Step 4: Simplify right side
    641,583.45x = 455,248,877,381.25
  5. Step 5: Solve for x
    x = 455,248,877,381.25/641,583.45
  6. Step 6: Final answer
    x = 709,570.79

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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.