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Finding the Fourth Proportional to 654,312.20, 981,468.30 and 465,355.40

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Solution

The fourth proportional to 654,312.20, 981,468.30 and 465,355.40 is: 698,033.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,312.20 : 981,468.30 = 465,355.40 : x
  2. Step 2: Convert to fraction form
    654,312.20/981,468.30 = 465,355.40/x
  3. Step 3: Cross multiply
    654,312.20x = 981,468.30 × 465,355.40
  4. Step 4: Simplify right side
    654,312.20x = 456,731,573,333.82
  5. Step 5: Solve for x
    x = 456,731,573,333.82/654,312.20
  6. Step 6: Final answer
    x = 698,033.10

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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.