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Finding the Fourth Proportional to 567,439.02, 783,071.22 and 312,799.32

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Solution

The fourth proportional to 567,439.02, 783,071.22 and 312,799.32 is: 431,666.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,439.02 : 783,071.22 = 312,799.32 : x
  2. Step 2: Convert to fraction form
    567,439.02/783,071.22 = 312,799.32/x
  3. Step 3: Cross multiply
    567,439.02x = 783,071.22 × 312,799.32
  4. Step 4: Simplify right side
    567,439.02x = 244,944,145,127.57
  5. Step 5: Solve for x
    x = 244,944,145,127.57/567,439.02
  6. Step 6: Final answer
    x = 431,666.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.