Home / 838,462,510.80-1,257,693,766.20-286,388,313.98

Finding the Fourth Proportional to 838,462,510.80, 1,257,693,766.20 and 286,388,313.98

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Solution

The fourth proportional to 838,462,510.80, 1,257,693,766.20 and 286,388,313.98 is: 429,582,470.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,462,510.80 : 1,257,693,766.20 = 286,388,313.98 : x
  2. Step 2: Convert to fraction form
    838,462,510.80/1,257,693,766.20 = 286,388,313.98/x
  3. Step 3: Cross multiply
    838,462,510.80x = 1,257,693,766.20 × 286,388,313.98
  4. Step 4: Simplify right side
    838,462,510.80x = 360,188,797,198,885,888
  5. Step 5: Solve for x
    x = 360,188,797,198,885,888/838,462,510.80
  6. Step 6: Final answer
    x = 429,582,470.96

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Double scale
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1.5x scale

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.