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Finding the Fourth Proportional to 822,918.40, 1,234,901.76 and 549,980.80

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Solution

The fourth proportional to 822,918.40, 1,234,901.76 and 549,980.80 is: 825,321.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    822,918.40 : 1,234,901.76 = 549,980.80 : x
  2. Step 2: Convert to fraction form
    822,918.40/1,234,901.76 = 549,980.80/x
  3. Step 3: Cross multiply
    822,918.40x = 1,234,901.76 × 549,980.80
  4. Step 4: Simplify right side
    822,918.40x = 679,172,257,886.21
  5. Step 5: Solve for x
    x = 679,172,257,886.21/822,918.40
  6. Step 6: Final answer
    x = 825,321.51

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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.