Home / 1,121,329.81-1,549,459.31-798,479.40

Finding the Fourth Proportional to 1,121,329.81, 1,549,459.31 and 798,479.40

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Solution

The fourth proportional to 1,121,329.81, 1,549,459.31 and 798,479.40 is: 1,103,342.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,329.81 : 1,549,459.31 = 798,479.40 : x
  2. Step 2: Convert to fraction form
    1,121,329.81/1,549,459.31 = 798,479.40/x
  3. Step 3: Cross multiply
    1,121,329.81x = 1,549,459.31 × 798,479.40
  4. Step 4: Simplify right side
    1,121,329.81x = 1,237,211,346,482.74
  5. Step 5: Solve for x
    x = 1,237,211,346,482.74/1,121,329.81
  6. Step 6: Final answer
    x = 1,103,342.95

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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.