Home / 1,122,488.59-1,549,035.65-639,053.72

Finding the Fourth Proportional to 1,122,488.59, 1,549,035.65 and 639,053.72

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Solution

The fourth proportional to 1,122,488.59, 1,549,035.65 and 639,053.72 is: 881,894.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122,488.59 : 1,549,035.65 = 639,053.72 : x
  2. Step 2: Convert to fraction form
    1,122,488.59/1,549,035.65 = 639,053.72/x
  3. Step 3: Cross multiply
    1,122,488.59x = 1,549,035.65 × 639,053.72
  4. Step 4: Simplify right side
    1,122,488.59x = 989,917,000,015.34
  5. Step 5: Solve for x
    x = 989,917,000,015.34/1,122,488.59
  6. Step 6: Final answer
    x = 881,894.94

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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.