Home / 669,307,503.72-923,666,784.92-371,962,278.48

Finding the Fourth Proportional to 669,307,503.72, 923,666,784.92 and 371,962,278.48

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Solution

The fourth proportional to 669,307,503.72, 923,666,784.92 and 371,962,278.48 is: 513,320,409.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,307,503.72 : 923,666,784.92 = 371,962,278.48 : x
  2. Step 2: Convert to fraction form
    669,307,503.72/923,666,784.92 = 371,962,278.48/x
  3. Step 3: Cross multiply
    669,307,503.72x = 923,666,784.92 × 371,962,278.48
  4. Step 4: Simplify right side
    669,307,503.72x = 343,569,201,875,139,328
  5. Step 5: Solve for x
    x = 343,569,201,875,139,328/669,307,503.72
  6. Step 6: Final answer
    x = 513,320,409.48

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Double scale
Find fourth proportional to 669,307,504.72, 923,666,786.30 and 371,962,279.48
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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.