Home / 1,117,830.60-1,676,616.30-319,235.40

Finding the Fourth Proportional to 1,117,830.60, 1,676,616.30 and 319,235.40

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Solution

The fourth proportional to 1,117,830.60, 1,676,616.30 and 319,235.40 is: 478,816.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,117,830.60 : 1,676,616.30 = 319,235.40 : x
  2. Step 2: Convert to fraction form
    1,117,830.60/1,676,616.30 = 319,235.40/x
  3. Step 3: Cross multiply
    1,117,830.60x = 1,676,616.30 × 319,235.40
  4. Step 4: Simplify right side
    1,117,830.60x = 535,235,275,177.02
  5. Step 5: Solve for x
    x = 535,235,275,177.02/1,117,830.60
  6. Step 6: Final answer
    x = 478,816.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.