Home / 917,503.61-1,376,255.42-286,471.49

Finding the Fourth Proportional to 917,503.61, 1,376,255.42 and 286,471.49

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Solution

The fourth proportional to 917,503.61, 1,376,255.42 and 286,471.49 is: 429,707.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,503.61 : 1,376,255.42 = 286,471.49 : x
  2. Step 2: Convert to fraction form
    917,503.61/1,376,255.42 = 286,471.49/x
  3. Step 3: Cross multiply
    917,503.61x = 1,376,255.42 × 286,471.49
  4. Step 4: Simplify right side
    917,503.61x = 394,257,932,474.34
  5. Step 5: Solve for x
    x = 394,257,932,474.34/917,503.61
  6. Step 6: Final answer
    x = 429,707.23

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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.