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Finding the Fourth Proportional to 612,502.20, 917,003.70 and 549,516.60

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Solution

The fourth proportional to 612,502.20, 917,003.70 and 549,516.60 is: 822,705.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,502.20 : 917,003.70 = 549,516.60 : x
  2. Step 2: Convert to fraction form
    612,502.20/917,003.70 = 549,516.60/x
  3. Step 3: Cross multiply
    612,502.20x = 917,003.70 × 549,516.60
  4. Step 4: Simplify right side
    612,502.20x = 503,908,755,411.42
  5. Step 5: Solve for x
    x = 503,908,755,411.42/612,502.20
  6. Step 6: Final answer
    x = 822,705.22

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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.