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Finding the Fourth Proportional to 558,409.38, 770,483.25 and 316,637.46

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Solution

The fourth proportional to 558,409.38, 770,483.25 and 316,637.46 is: 436,890.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,409.38 : 770,483.25 = 316,637.46 : x
  2. Step 2: Convert to fraction form
    558,409.38/770,483.25 = 316,637.46/x
  3. Step 3: Cross multiply
    558,409.38x = 770,483.25 × 316,637.46
  4. Step 4: Simplify right side
    558,409.38x = 243,963,859,252.55
  5. Step 5: Solve for x
    x = 243,963,859,252.55/558,409.38
  6. Step 6: Final answer
    x = 436,890.69

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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.