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Finding the Fourth Proportional to 448,038.40, 672,057.60 and 426,265.60

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Solution

The fourth proportional to 448,038.40, 672,057.60 and 426,265.60 is: 639,398.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,038.40 : 672,057.60 = 426,265.60 : x
  2. Step 2: Convert to fraction form
    448,038.40/672,057.60 = 426,265.60/x
  3. Step 3: Cross multiply
    448,038.40x = 672,057.60 × 426,265.60
  4. Step 4: Simplify right side
    448,038.40x = 286,475,036,098.56
  5. Step 5: Solve for x
    x = 286,475,036,098.56/448,038.40
  6. Step 6: Final answer
    x = 639,398.40

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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.