Home / 1,351,663.20-1,865,268-778,688.64

Finding the Fourth Proportional to 1,351,663.20, 1,865,268 and 778,688.64

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Solution

The fourth proportional to 1,351,663.20, 1,865,268 and 778,688.64 is: 1,074,574.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,351,663.20 : 1,865,268 = 778,688.64 : x
  2. Step 2: Convert to fraction form
    1,351,663.20/1,865,268 = 778,688.64/x
  3. Step 3: Cross multiply
    1,351,663.20x = 1,865,268 × 778,688.64
  4. Step 4: Simplify right side
    1,351,663.20x = 1,452,463,002,155.52
  5. Step 5: Solve for x
    x = 1,452,463,002,155.52/1,351,663.20
  6. Step 6: Final answer
    x = 1,074,574.64

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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.