Home / 985,486.72-1,476,312.79-647,500.45

Finding the Fourth Proportional to 985,486.72, 1,476,312.79 and 647,500.45

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Solution

The fourth proportional to 985,486.72, 1,476,312.79 and 647,500.45 is: 969,990.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,486.72 : 1,476,312.79 = 647,500.45 : x
  2. Step 2: Convert to fraction form
    985,486.72/1,476,312.79 = 647,500.45/x
  3. Step 3: Cross multiply
    985,486.72x = 1,476,312.79 × 647,500.45
  4. Step 4: Simplify right side
    985,486.72x = 955,913,188,484.19
  5. Step 5: Solve for x
    x = 955,913,188,484.19/985,486.72
  6. Step 6: Final answer
    x = 969,990.94

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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.