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Finding the Fourth Proportional to 567,430.76, 783,054.58 and 312,787.56

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Solution

The fourth proportional to 567,430.76, 783,054.58 and 312,787.56 is: 431,646.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,430.76 : 783,054.58 = 312,787.56 : x
  2. Step 2: Convert to fraction form
    567,430.76/783,054.58 = 312,787.56/x
  3. Step 3: Cross multiply
    567,430.76x = 783,054.58 × 312,787.56
  4. Step 4: Simplify right side
    567,430.76x = 244,929,731,425.03
  5. Step 5: Solve for x
    x = 244,929,731,425.03/567,430.76
  6. Step 6: Final answer
    x = 431,646.91

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Double scale
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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.