Home / 989,136.81-1,365,082.20-553,597.92

Finding the Fourth Proportional to 989,136.81, 1,365,082.20 and 553,597.92

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Solution

The fourth proportional to 989,136.81, 1,365,082.20 and 553,597.92 is: 764,006.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,136.81 : 1,365,082.20 = 553,597.92 : x
  2. Step 2: Convert to fraction form
    989,136.81/1,365,082.20 = 553,597.92/x
  3. Step 3: Cross multiply
    989,136.81x = 1,365,082.20 × 553,597.92
  4. Step 4: Simplify right side
    989,136.81x = 755,706,666,549.02
  5. Step 5: Solve for x
    x = 755,706,666,549.02/989,136.81
  6. Step 6: Final answer
    x = 764,006.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.