Home / 867,947.80-1,301,921.70-306,909.40

Finding the Fourth Proportional to 867,947.80, 1,301,921.70 and 306,909.40

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Solution

The fourth proportional to 867,947.80, 1,301,921.70 and 306,909.40 is: 460,364.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,947.80 : 1,301,921.70 = 306,909.40 : x
  2. Step 2: Convert to fraction form
    867,947.80/1,301,921.70 = 306,909.40/x
  3. Step 3: Cross multiply
    867,947.80x = 1,301,921.70 × 306,909.40
  4. Step 4: Simplify right side
    867,947.80x = 399,572,007,793.98
  5. Step 5: Solve for x
    x = 399,572,007,793.98/867,947.80
  6. Step 6: Final answer
    x = 460,364.10

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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.