Home / 1,209,217.80-1,813,826.70-310,657.80

Finding the Fourth Proportional to 1,209,217.80, 1,813,826.70 and 310,657.80

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Solution

The fourth proportional to 1,209,217.80, 1,813,826.70 and 310,657.80 is: 465,986.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,217.80 : 1,813,826.70 = 310,657.80 : x
  2. Step 2: Convert to fraction form
    1,209,217.80/1,813,826.70 = 310,657.80/x
  3. Step 3: Cross multiply
    1,209,217.80x = 1,813,826.70 × 310,657.80
  4. Step 4: Simplify right side
    1,209,217.80x = 563,479,412,203.26
  5. Step 5: Solve for x
    x = 563,479,412,203.26/1,209,217.80
  6. Step 6: Final answer
    x = 465,986.70

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1.5x scale

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.