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Finding the Fourth Proportional to 848,632.30, 1,272,948.45 and 815,973.10

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Solution

The fourth proportional to 848,632.30, 1,272,948.45 and 815,973.10 is: 1,223,959.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    848,632.30 : 1,272,948.45 = 815,973.10 : x
  2. Step 2: Convert to fraction form
    848,632.30/1,272,948.45 = 815,973.10/x
  3. Step 3: Cross multiply
    848,632.30x = 1,272,948.45 × 815,973.10
  4. Step 4: Simplify right side
    848,632.30x = 1,038,691,692,886.70
  5. Step 5: Solve for x
    x = 1,038,691,692,886.70/848,632.30
  6. Step 6: Final answer
    x = 1,223,959.65

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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.