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Finding the Fourth Proportional to 578,669.62, 864,484.88 and 374,603.28

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Solution

The fourth proportional to 578,669.62, 864,484.88 and 374,603.28 is: 559,626.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,669.62 : 864,484.88 = 374,603.28 : x
  2. Step 2: Convert to fraction form
    578,669.62/864,484.88 = 374,603.28/x
  3. Step 3: Cross multiply
    578,669.62x = 864,484.88 × 374,603.28
  4. Step 4: Simplify right side
    578,669.62x = 323,838,875,287.43
  5. Step 5: Solve for x
    x = 323,838,875,287.43/578,669.62
  6. Step 6: Final answer
    x = 559,626.54

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.