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Finding the Fourth Proportional to 545,124.30, 817,686.45 and 308,928.30

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Solution

The fourth proportional to 545,124.30, 817,686.45 and 308,928.30 is: 463,392.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,124.30 : 817,686.45 = 308,928.30 : x
  2. Step 2: Convert to fraction form
    545,124.30/817,686.45 = 308,928.30/x
  3. Step 3: Cross multiply
    545,124.30x = 817,686.45 × 308,928.30
  4. Step 4: Simplify right side
    545,124.30x = 252,606,484,931.54
  5. Step 5: Solve for x
    x = 252,606,484,931.54/545,124.30
  6. Step 6: Final answer
    x = 463,392.45

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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.