Home / 429,075,600.80-643,613,401.20-105,959,472.80

Finding the Fourth Proportional to 429,075,600.80, 643,613,401.20 and 105,959,472.80

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Solution

The fourth proportional to 429,075,600.80, 643,613,401.20 and 105,959,472.80 is: 158,939,209.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,075,600.80 : 643,613,401.20 = 105,959,472.80 : x
  2. Step 2: Convert to fraction form
    429,075,600.80/643,613,401.20 = 105,959,472.80/x
  3. Step 3: Cross multiply
    429,075,600.80x = 643,613,401.20 × 105,959,472.80
  4. Step 4: Simplify right side
    429,075,600.80x = 68,196,936,678,166,888
  5. Step 5: Solve for x
    x = 68,196,936,678,166,888/429,075,600.80
  6. Step 6: Final answer
    x = 158,939,209.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.