Home / 563,439.35-777,549.26-305,316.40

Finding the Fourth Proportional to 563,439.35, 777,549.26 and 305,316.40

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Solution

The fourth proportional to 563,439.35, 777,549.26 and 305,316.40 is: 421,338.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,439.35 : 777,549.26 = 305,316.40 : x
  2. Step 2: Convert to fraction form
    563,439.35/777,549.26 = 305,316.40/x
  3. Step 3: Cross multiply
    563,439.35x = 777,549.26 × 305,316.40
  4. Step 4: Simplify right side
    563,439.35x = 237,398,535,471.54
  5. Step 5: Solve for x
    x = 237,398,535,471.54/563,439.35
  6. Step 6: Final answer
    x = 421,338.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.