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Finding the Fourth Proportional to 530,692.70, 732,169.12 and 347,038.80

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Solution

The fourth proportional to 530,692.70, 732,169.12 and 347,038.80 is: 478,791.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,692.70 : 732,169.12 = 347,038.80 : x
  2. Step 2: Convert to fraction form
    530,692.70/732,169.12 = 347,038.80/x
  3. Step 3: Cross multiply
    530,692.70x = 732,169.12 × 347,038.80
  4. Step 4: Simplify right side
    530,692.70x = 254,091,092,801.86
  5. Step 5: Solve for x
    x = 254,091,092,801.86/530,692.70
  6. Step 6: Final answer
    x = 478,791.38

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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.