Home / 866,947.80-1,300,421.70-305,909.40

Finding the Fourth Proportional to 866,947.80, 1,300,421.70 and 305,909.40

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Solution

The fourth proportional to 866,947.80, 1,300,421.70 and 305,909.40 is: 458,864.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,947.80 : 1,300,421.70 = 305,909.40 : x
  2. Step 2: Convert to fraction form
    866,947.80/1,300,421.70 = 305,909.40/x
  3. Step 3: Cross multiply
    866,947.80x = 1,300,421.70 × 305,909.40
  4. Step 4: Simplify right side
    866,947.80x = 397,811,221,993.98
  5. Step 5: Solve for x
    x = 397,811,221,993.98/866,947.80
  6. Step 6: Final answer
    x = 458,864.10

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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.