Home / 830,004.70-1,245,007.05-812,508.70

Finding the Fourth Proportional to 830,004.70, 1,245,007.05 and 812,508.70

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Solution

The fourth proportional to 830,004.70, 1,245,007.05 and 812,508.70 is: 1,218,763.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,004.70 : 1,245,007.05 = 812,508.70 : x
  2. Step 2: Convert to fraction form
    830,004.70/1,245,007.05 = 812,508.70/x
  3. Step 3: Cross multiply
    830,004.70x = 1,245,007.05 × 812,508.70
  4. Step 4: Simplify right side
    830,004.70x = 1,011,579,059,686.34
  5. Step 5: Solve for x
    x = 1,011,579,059,686.34/830,004.70
  6. Step 6: Final answer
    x = 1,218,763.05

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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.