Home / 289,172,828.40-433,756,477.80-70,824,130.80

Finding the Fourth Proportional to 289,172,828.40, 433,756,477.80 and 70,824,130.80

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Solution

The fourth proportional to 289,172,828.40, 433,756,477.80 and 70,824,130.80 is: 106,235,519.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,172,828.40 : 433,756,477.80 = 70,824,130.80 : x
  2. Step 2: Convert to fraction form
    289,172,828.40/433,756,477.80 = 70,824,130.80/x
  3. Step 3: Cross multiply
    289,172,828.40x = 433,756,477.80 × 70,824,130.80
  4. Step 4: Simplify right side
    289,172,828.40x = 30,720,425,519,054,496
  5. Step 5: Solve for x
    x = 30,720,425,519,054,496/289,172,828.40
  6. Step 6: Final answer
    x = 106,235,519.05

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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.