Home / 786,145.80-1,179,218.70-779,147.40

Finding the Fourth Proportional to 786,145.80, 1,179,218.70 and 779,147.40

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Solution

The fourth proportional to 786,145.80, 1,179,218.70 and 779,147.40 is: 1,168,721.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,145.80 : 1,179,218.70 = 779,147.40 : x
  2. Step 2: Convert to fraction form
    786,145.80/1,179,218.70 = 779,147.40/x
  3. Step 3: Cross multiply
    786,145.80x = 1,179,218.70 × 779,147.40
  4. Step 4: Simplify right side
    786,145.80x = 918,785,184,136.38
  5. Step 5: Solve for x
    x = 918,785,184,136.38/786,145.80
  6. Step 6: Final answer
    x = 1,168,721.10

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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.