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Finding the Fourth Proportional to 554,427.20, 829,891.20 and 435,454.40

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Solution

The fourth proportional to 554,427.20, 829,891.20 and 435,454.40 is: 651,807.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,427.20 : 829,891.20 = 435,454.40 : x
  2. Step 2: Convert to fraction form
    554,427.20/829,891.20 = 435,454.40/x
  3. Step 3: Cross multiply
    554,427.20x = 829,891.20 × 435,454.40
  4. Step 4: Simplify right side
    554,427.20x = 361,379,774,561.28
  5. Step 5: Solve for x
    x = 361,379,774,561.28/554,427.20
  6. Step 6: Final answer
    x = 651,807.44

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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.