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Finding the Fourth Proportional to 571,164.80, 855,710.40 and 465,411.20

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Solution

The fourth proportional to 571,164.80, 855,710.40 and 465,411.20 is: 697,271.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,164.80 : 855,710.40 = 465,411.20 : x
  2. Step 2: Convert to fraction form
    571,164.80/855,710.40 = 465,411.20/x
  3. Step 3: Cross multiply
    571,164.80x = 855,710.40 × 465,411.20
  4. Step 4: Simplify right side
    571,164.80x = 398,257,204,116.48
  5. Step 5: Solve for x
    x = 398,257,204,116.48/571,164.80
  6. Step 6: Final answer
    x = 697,271.97

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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.