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Finding the Fourth Proportional to 612,516.20, 917,024.70 and 549,530.60

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Solution

The fourth proportional to 612,516.20, 917,024.70 and 549,530.60 is: 822,726.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,516.20 : 917,024.70 = 549,530.60 : x
  2. Step 2: Convert to fraction form
    612,516.20/917,024.70 = 549,530.60/x
  3. Step 3: Cross multiply
    612,516.20x = 917,024.70 × 549,530.60
  4. Step 4: Simplify right side
    612,516.20x = 503,933,133,605.82
  5. Step 5: Solve for x
    x = 503,933,133,605.82/612,516.20
  6. Step 6: Final answer
    x = 822,726.21

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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.