Home / 420,043,075.65-579,659,549.45-231,871,478.85

Finding the Fourth Proportional to 420,043,075.65, 579,659,549.45 and 231,871,478.85

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Solution

The fourth proportional to 420,043,075.65, 579,659,549.45 and 231,871,478.85 is: 319,982,698.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,043,075.65 : 579,659,549.45 = 231,871,478.85 : x
  2. Step 2: Convert to fraction form
    420,043,075.65/579,659,549.45 = 231,871,478.85/x
  3. Step 3: Cross multiply
    420,043,075.65x = 579,659,549.45 × 231,871,478.85
  4. Step 4: Simplify right side
    420,043,075.65x = 134,406,516,960,496,208
  5. Step 5: Solve for x
    x = 134,406,516,960,496,208/420,043,075.65
  6. Step 6: Final answer
    x = 319,982,698.80

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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.