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Finding the Fourth Proportional to 572,705.20, 858,798.60 and 256,999.60

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Solution

The fourth proportional to 572,705.20, 858,798.60 and 256,999.60 is: 385,383.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,705.20 : 858,798.60 = 256,999.60 : x
  2. Step 2: Convert to fraction form
    572,705.20/858,798.60 = 256,999.60/x
  3. Step 3: Cross multiply
    572,705.20x = 858,798.60 × 256,999.60
  4. Step 4: Simplify right side
    572,705.20x = 220,710,896,680.56
  5. Step 5: Solve for x
    x = 220,710,896,680.56/572,705.20
  6. Step 6: Final answer
    x = 385,383.08

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1.5x scale

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.