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Finding the Fourth Proportional to 612,512.70, 917,019.45 and 549,527.10

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Solution

The fourth proportional to 612,512.70, 917,019.45 and 549,527.10 is: 822,720.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,512.70 : 917,019.45 = 549,527.10 : x
  2. Step 2: Convert to fraction form
    612,512.70/917,019.45 = 549,527.10/x
  3. Step 3: Cross multiply
    612,512.70x = 917,019.45 × 549,527.10
  4. Step 4: Simplify right side
    612,512.70x = 503,927,039,002.10
  5. Step 5: Solve for x
    x = 503,927,039,002.10/612,512.70
  6. Step 6: Final answer
    x = 822,720.96

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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.