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Finding the Fourth Proportional to 633,501.78, 874,232.70 and 347,032.20

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Solution

The fourth proportional to 633,501.78, 874,232.70 and 347,032.20 is: 478,904.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,501.78 : 874,232.70 = 347,032.20 : x
  2. Step 2: Convert to fraction form
    633,501.78/874,232.70 = 347,032.20/x
  3. Step 3: Cross multiply
    633,501.78x = 874,232.70 × 347,032.20
  4. Step 4: Simplify right side
    633,501.78x = 303,386,897,192.94
  5. Step 5: Solve for x
    x = 303,386,897,192.94/633,501.78
  6. Step 6: Final answer
    x = 478,904.57

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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.