Home / 670,631.80-1,005,947.70-513,167.80

Finding the Fourth Proportional to 670,631.80, 1,005,947.70 and 513,167.80

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Solution

The fourth proportional to 670,631.80, 1,005,947.70 and 513,167.80 is: 769,751.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,631.80 : 1,005,947.70 = 513,167.80 : x
  2. Step 2: Convert to fraction form
    670,631.80/1,005,947.70 = 513,167.80/x
  3. Step 3: Cross multiply
    670,631.80x = 1,005,947.70 × 513,167.80
  4. Step 4: Simplify right side
    670,631.80x = 516,219,968,124.06
  5. Step 5: Solve for x
    x = 516,219,968,124.06/670,631.80
  6. Step 6: Final answer
    x = 769,751.70

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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.