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Finding the Fourth Proportional to 670,439.58, 925,073.64 and 376,098.72

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Solution

The fourth proportional to 670,439.58, 925,073.64 and 376,098.72 is: 518,941.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,439.58 : 925,073.64 = 376,098.72 : x
  2. Step 2: Convert to fraction form
    670,439.58/925,073.64 = 376,098.72/x
  3. Step 3: Cross multiply
    670,439.58x = 925,073.64 × 376,098.72
  4. Step 4: Simplify right side
    670,439.58x = 347,919,011,909.74
  5. Step 5: Solve for x
    x = 347,919,011,909.74/670,439.58
  6. Step 6: Final answer
    x = 518,941.64

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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.