Home / 916,800.80-1,265,121.76-508,870.56

Finding the Fourth Proportional to 916,800.80, 1,265,121.76 and 508,870.56

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Solution

The fourth proportional to 916,800.80, 1,265,121.76 and 508,870.56 is: 702,206.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,800.80 : 1,265,121.76 = 508,870.56 : x
  2. Step 2: Convert to fraction form
    916,800.80/1,265,121.76 = 508,870.56/x
  3. Step 3: Cross multiply
    916,800.80x = 1,265,121.76 × 508,870.56
  4. Step 4: Simplify right side
    916,800.80x = 643,783,218,479.39
  5. Step 5: Solve for x
    x = 643,783,218,479.39/916,800.80
  6. Step 6: Final answer
    x = 702,206.21

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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.