Home / 820,509.47-1,130,947.80-548,478.11

Finding the Fourth Proportional to 820,509.47, 1,130,947.80 and 548,478.11

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Solution

The fourth proportional to 820,509.47, 1,130,947.80 and 548,478.11 is: 755,993.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,509.47 : 1,130,947.80 = 548,478.11 : x
  2. Step 2: Convert to fraction form
    820,509.47/1,130,947.80 = 548,478.11/x
  3. Step 3: Cross multiply
    820,509.47x = 1,130,947.80 × 548,478.11
  4. Step 4: Simplify right side
    820,509.47x = 620,300,107,569.11
  5. Step 5: Solve for x
    x = 620,300,107,569.11/820,509.47
  6. Step 6: Final answer
    x = 755,993.84

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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.