Home / 865,121.49-1,298,146.99-360,030.69

Finding the Fourth Proportional to 865,121.49, 1,298,146.99 and 360,030.69

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Solution

The fourth proportional to 865,121.49, 1,298,146.99 and 360,030.69 is: 540,239.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,121.49 : 1,298,146.99 = 360,030.69 : x
  2. Step 2: Convert to fraction form
    865,121.49/1,298,146.99 = 360,030.69/x
  3. Step 3: Cross multiply
    865,121.49x = 1,298,146.99 × 360,030.69
  4. Step 4: Simplify right side
    865,121.49x = 467,372,756,531.12
  5. Step 5: Solve for x
    x = 467,372,756,531.12/865,121.49
  6. Step 6: Final answer
    x = 540,239.45

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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.