Home / 1,122,513.80-1,549,124.34-639,088.52

Finding the Fourth Proportional to 1,122,513.80, 1,549,124.34 and 639,088.52

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Solution

The fourth proportional to 1,122,513.80, 1,549,124.34 and 639,088.52 is: 881,973.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122,513.80 : 1,549,124.34 = 639,088.52 : x
  2. Step 2: Convert to fraction form
    1,122,513.80/1,549,124.34 = 639,088.52/x
  3. Step 3: Cross multiply
    1,122,513.80x = 1,549,124.34 × 639,088.52
  4. Step 4: Simplify right side
    1,122,513.80x = 990,027,581,746.58
  5. Step 5: Solve for x
    x = 990,027,581,746.58/1,122,513.80
  6. Step 6: Final answer
    x = 881,973.64

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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.