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Finding the Fourth Proportional to 885,700.80, 1,326,801.60 and 529,657.20

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Solution

The fourth proportional to 885,700.80, 1,326,801.60 and 529,657.20 is: 793,439.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,700.80 : 1,326,801.60 = 529,657.20 : x
  2. Step 2: Convert to fraction form
    885,700.80/1,326,801.60 = 529,657.20/x
  3. Step 3: Cross multiply
    885,700.80x = 1,326,801.60 × 529,657.20
  4. Step 4: Simplify right side
    885,700.80x = 702,750,020,411.52
  5. Step 5: Solve for x
    x = 702,750,020,411.52/885,700.80
  6. Step 6: Final answer
    x = 793,439.52

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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.