Home / 1,278,130.08-1,762,559.52-991,545.60

Finding the Fourth Proportional to 1,278,130.08, 1,762,559.52 and 991,545.60

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Solution

The fourth proportional to 1,278,130.08, 1,762,559.52 and 991,545.60 is: 1,367,355.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,130.08 : 1,762,559.52 = 991,545.60 : x
  2. Step 2: Convert to fraction form
    1,278,130.08/1,762,559.52 = 991,545.60/x
  3. Step 3: Cross multiply
    1,278,130.08x = 1,762,559.52 × 991,545.60
  4. Step 4: Simplify right side
    1,278,130.08x = 1,747,658,136,794.11
  5. Step 5: Solve for x
    x = 1,747,658,136,794.11/1,278,130.08
  6. Step 6: Final answer
    x = 1,367,355.45

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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.