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Finding the Fourth Proportional to 778,728.90, 1,166,250.15 and 528,053.70

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Solution

The fourth proportional to 778,728.90, 1,166,250.15 and 528,053.70 is: 790,830.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,728.90 : 1,166,250.15 = 528,053.70 : x
  2. Step 2: Convert to fraction form
    778,728.90/1,166,250.15 = 528,053.70/x
  3. Step 3: Cross multiply
    778,728.90x = 1,166,250.15 × 528,053.70
  4. Step 4: Simplify right side
    778,728.90x = 615,842,706,833.06
  5. Step 5: Solve for x
    x = 615,842,706,833.06/778,728.90
  6. Step 6: Final answer
    x = 790,830.68

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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.