Home / 685,803,206.50-946,434,439.58-384,394,089.13

Finding the Fourth Proportional to 685,803,206.50, 946,434,439.58 and 384,394,089.13

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Solution

The fourth proportional to 685,803,206.50, 946,434,439.58 and 384,394,089.13 is: 530,478,424.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,803,206.50 : 946,434,439.58 = 384,394,089.13 : x
  2. Step 2: Convert to fraction form
    685,803,206.50/946,434,439.58 = 384,394,089.13/x
  3. Step 3: Cross multiply
    685,803,206.50x = 946,434,439.58 × 384,394,089.13
  4. Step 4: Simplify right side
    685,803,206.50x = 363,803,804,321,694,144
  5. Step 5: Solve for x
    x = 363,803,804,321,694,144/685,803,206.50
  6. Step 6: Final answer
    x = 530,478,424.24

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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.