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Finding the Fourth Proportional to 457,347.60, 686,021.40 and 448,599.60

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Solution

The fourth proportional to 457,347.60, 686,021.40 and 448,599.60 is: 672,899.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,347.60 : 686,021.40 = 448,599.60 : x
  2. Step 2: Convert to fraction form
    457,347.60/686,021.40 = 448,599.60/x
  3. Step 3: Cross multiply
    457,347.60x = 686,021.40 × 448,599.60
  4. Step 4: Simplify right side
    457,347.60x = 307,748,925,631.44
  5. Step 5: Solve for x
    x = 307,748,925,631.44/457,347.60
  6. Step 6: Final answer
    x = 672,899.40

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Similar ratio
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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.