Home / 979,728.18-1,470,044.25-447,412.38

Finding the Fourth Proportional to 979,728.18, 1,470,044.25 and 447,412.38

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Solution

The fourth proportional to 979,728.18, 1,470,044.25 and 447,412.38 is: 671,324.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,728.18 : 1,470,044.25 = 447,412.38 : x
  2. Step 2: Convert to fraction form
    979,728.18/1,470,044.25 = 447,412.38/x
  3. Step 3: Cross multiply
    979,728.18x = 1,470,044.25 × 447,412.38
  4. Step 4: Simplify right side
    979,728.18x = 657,715,996,597.82
  5. Step 5: Solve for x
    x = 657,715,996,597.82/979,728.18
  6. Step 6: Final answer
    x = 671,324.98

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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.