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Finding the Fourth Proportional to 578,670.40, 868,005.60 and 499,873.60

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Solution

The fourth proportional to 578,670.40, 868,005.60 and 499,873.60 is: 749,810.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,670.40 : 868,005.60 = 499,873.60 : x
  2. Step 2: Convert to fraction form
    578,670.40/868,005.60 = 499,873.60/x
  3. Step 3: Cross multiply
    578,670.40x = 868,005.60 × 499,873.60
  4. Step 4: Simplify right side
    578,670.40x = 433,893,084,092.16
  5. Step 5: Solve for x
    x = 433,893,084,092.16/578,670.40
  6. Step 6: Final answer
    x = 749,810.40

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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.