Home / 686,143.80-1,029,798.90-553,174.20

Finding the Fourth Proportional to 686,143.80, 1,029,798.90 and 553,174.20

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Solution

The fourth proportional to 686,143.80, 1,029,798.90 and 553,174.20 is: 830,231.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,143.80 : 1,029,798.90 = 553,174.20 : x
  2. Step 2: Convert to fraction form
    686,143.80/1,029,798.90 = 553,174.20/x
  3. Step 3: Cross multiply
    686,143.80x = 1,029,798.90 × 553,174.20
  4. Step 4: Simplify right side
    686,143.80x = 569,658,182,668.38
  5. Step 5: Solve for x
    x = 569,658,182,668.38/686,143.80
  6. Step 6: Final answer
    x = 830,231.48

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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.