Home / 917,908.47-1,377,136.49-438,495.39

Finding the Fourth Proportional to 917,908.47, 1,377,136.49 and 438,495.39

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Solution

The fourth proportional to 917,908.47, 1,377,136.49 and 438,495.39 is: 657,873.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,908.47 : 1,377,136.49 = 438,495.39 : x
  2. Step 2: Convert to fraction form
    917,908.47/1,377,136.49 = 438,495.39/x
  3. Step 3: Cross multiply
    917,908.47x = 1,377,136.49 × 438,495.39
  4. Step 4: Simplify right side
    917,908.47x = 603,868,000,073.30
  5. Step 5: Solve for x
    x = 603,868,000,073.30/917,908.47
  6. Step 6: Final answer
    x = 657,873.87

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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.