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Finding the Fourth Proportional to 434,813.40, 652,220.10 and 403,320.60

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Solution

The fourth proportional to 434,813.40, 652,220.10 and 403,320.60 is: 604,980.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,813.40 : 652,220.10 = 403,320.60 : x
  2. Step 2: Convert to fraction form
    434,813.40/652,220.10 = 403,320.60/x
  3. Step 3: Cross multiply
    434,813.40x = 652,220.10 × 403,320.60
  4. Step 4: Simplify right side
    434,813.40x = 263,053,802,064.06
  5. Step 5: Solve for x
    x = 263,053,802,064.06/434,813.40
  6. Step 6: Final answer
    x = 604,980.90

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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.