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Finding the Fourth Proportional to 885,703.80, 1,328,555.70 and 602,268.60

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Solution

The fourth proportional to 885,703.80, 1,328,555.70 and 602,268.60 is: 903,402.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,703.80 : 1,328,555.70 = 602,268.60 : x
  2. Step 2: Convert to fraction form
    885,703.80/1,328,555.70 = 602,268.60/x
  3. Step 3: Cross multiply
    885,703.80x = 1,328,555.70 × 602,268.60
  4. Step 4: Simplify right side
    885,703.80x = 800,147,381,461.02
  5. Step 5: Solve for x
    x = 800,147,381,461.02/885,703.80
  6. Step 6: Final answer
    x = 903,402.90

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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.