Home / 1,317,695.40-1,976,543.10-820,031.40

Finding the Fourth Proportional to 1,317,695.40, 1,976,543.10 and 820,031.40

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Solution

The fourth proportional to 1,317,695.40, 1,976,543.10 and 820,031.40 is: 1,230,047.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317,695.40 : 1,976,543.10 = 820,031.40 : x
  2. Step 2: Convert to fraction form
    1,317,695.40/1,976,543.10 = 820,031.40/x
  3. Step 3: Cross multiply
    1,317,695.40x = 1,976,543.10 × 820,031.40
  4. Step 4: Simplify right side
    1,317,695.40x = 1,620,827,405,453.34
  5. Step 5: Solve for x
    x = 1,620,827,405,453.34/1,317,695.40
  6. Step 6: Final answer
    x = 1,230,047.10

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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.