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Finding the Fourth Proportional to 803,570.40, 1,205,501.40 and 403,203.60

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Solution

The fourth proportional to 803,570.40, 1,205,501.40 and 403,203.60 is: 604,878.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    803,570.40 : 1,205,501.40 = 403,203.60 : x
  2. Step 2: Convert to fraction form
    803,570.40/1,205,501.40 = 403,203.60/x
  3. Step 3: Cross multiply
    803,570.40x = 1,205,501.40 × 403,203.60
  4. Step 4: Simplify right side
    803,570.40x = 486,062,504,285.04
  5. Step 5: Solve for x
    x = 486,062,504,285.04/803,570.40
  6. Step 6: Final answer
    x = 604,878.56

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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.