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Finding the Fourth Proportional to 528,085.55, 792,128.33 and 440,605.55

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Solution

The fourth proportional to 528,085.55, 792,128.33 and 440,605.55 is: 660,908.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,085.55 : 792,128.33 = 440,605.55 : x
  2. Step 2: Convert to fraction form
    528,085.55/792,128.33 = 440,605.55/x
  3. Step 3: Cross multiply
    528,085.55x = 792,128.33 × 440,605.55
  4. Step 4: Simplify right side
    528,085.55x = 349,016,138,510.23
  5. Step 5: Solve for x
    x = 349,016,138,510.23/528,085.55
  6. Step 6: Final answer
    x = 660,908.33

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Double scale
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Similar ratio
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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.