Home / 1,351,665.20-1,865,270.76-778,690.64

Finding the Fourth Proportional to 1,351,665.20, 1,865,270.76 and 778,690.64

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Solution

The fourth proportional to 1,351,665.20, 1,865,270.76 and 778,690.64 is: 1,074,577.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,351,665.20 : 1,865,270.76 = 778,690.64 : x
  2. Step 2: Convert to fraction form
    1,351,665.20/1,865,270.76 = 778,690.64/x
  3. Step 3: Cross multiply
    1,351,665.20x = 1,865,270.76 × 778,690.64
  4. Step 4: Simplify right side
    1,351,665.20x = 1,452,468,881,877.69
  5. Step 5: Solve for x
    x = 1,452,468,881,877.69/1,351,665.20
  6. Step 6: Final answer
    x = 1,074,577.40

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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.