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Finding the Fourth Proportional to 553,424.07, 830,136.33 and 427,248.53

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Solution

The fourth proportional to 553,424.07, 830,136.33 and 427,248.53 is: 640,872.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,424.07 : 830,136.33 = 427,248.53 : x
  2. Step 2: Convert to fraction form
    553,424.07/830,136.33 = 427,248.53/x
  3. Step 3: Cross multiply
    553,424.07x = 830,136.33 × 427,248.53
  4. Step 4: Simplify right side
    553,424.07x = 354,674,526,692.10
  5. Step 5: Solve for x
    x = 354,674,526,692.10/553,424.07
  6. Step 6: Final answer
    x = 640,872.97

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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.