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Finding the Fourth Proportional to 523,489.83, 785,625.54 and 388,864.74

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Solution

The fourth proportional to 523,489.83, 785,625.54 and 388,864.74 is: 583,587.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,489.83 : 785,625.54 = 388,864.74 : x
  2. Step 2: Convert to fraction form
    523,489.83/785,625.54 = 388,864.74/x
  3. Step 3: Cross multiply
    523,489.83x = 785,625.54 × 388,864.74
  4. Step 4: Simplify right side
    523,489.83x = 305,502,071,349.46
  5. Step 5: Solve for x
    x = 305,502,071,349.46/523,489.83
  6. Step 6: Final answer
    x = 583,587.40

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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.