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Finding the Fourth Proportional to 628,281.40, 867,001.01 and 348,861.20

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Solution

The fourth proportional to 628,281.40, 867,001.01 and 348,861.20 is: 481,413.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,281.40 : 867,001.01 = 348,861.20 : x
  2. Step 2: Convert to fraction form
    628,281.40/867,001.01 = 348,861.20/x
  3. Step 3: Cross multiply
    628,281.40x = 867,001.01 × 348,861.20
  4. Step 4: Simplify right side
    628,281.40x = 302,463,006,670.50
  5. Step 5: Solve for x
    x = 302,463,006,670.50/628,281.40
  6. Step 6: Final answer
    x = 481,413.28

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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.