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Finding the Fourth Proportional to 554,141.53, 763,840.81 and 408,480.35

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Solution

The fourth proportional to 554,141.53, 763,840.81 and 408,480.35 is: 563,058.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,141.53 : 763,840.81 = 408,480.35 : x
  2. Step 2: Convert to fraction form
    554,141.53/763,840.81 = 408,480.35/x
  3. Step 3: Cross multiply
    554,141.53x = 763,840.81 × 408,480.35
  4. Step 4: Simplify right side
    554,141.53x = 312,013,956,572.68
  5. Step 5: Solve for x
    x = 312,013,956,572.68/554,141.53
  6. Step 6: Final answer
    x = 563,058.25

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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.