Home / 991,246.80-1,485,703.80-517,688.40

Finding the Fourth Proportional to 991,246.80, 1,485,703.80 and 517,688.40

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Solution

The fourth proportional to 991,246.80, 1,485,703.80 and 517,688.40 is: 775,923.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,246.80 : 1,485,703.80 = 517,688.40 : x
  2. Step 2: Convert to fraction form
    991,246.80/1,485,703.80 = 517,688.40/x
  3. Step 3: Cross multiply
    991,246.80x = 1,485,703.80 × 517,688.40
  4. Step 4: Simplify right side
    991,246.80x = 769,131,623,095.92
  5. Step 5: Solve for x
    x = 769,131,623,095.92/991,246.80
  6. Step 6: Final answer
    x = 775,923.44

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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.