Home / 1,316,187,621.74-1,974,503,392.59-442,581,323.06

Finding the Fourth Proportional to 1,316,187,621.74, 1,974,503,392.59 and 442,581,323.06

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Solution

The fourth proportional to 1,316,187,621.74, 1,974,503,392.59 and 442,581,323.06 is: 663,946,620.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316,187,621.74 : 1,974,503,392.59 = 442,581,323.06 : x
  2. Step 2: Convert to fraction form
    1,316,187,621.74/1,974,503,392.59 = 442,581,323.06/x
  3. Step 3: Cross multiply
    1,316,187,621.74x = 1,974,503,392.59 × 442,581,323.06
  4. Step 4: Simplify right side
    1,316,187,621.74x = 873,878,323,878,940,800
  5. Step 5: Solve for x
    x = 873,878,323,878,940,800/1,316,187,621.74
  6. Step 6: Final answer
    x = 663,946,620.87

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Double scale
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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.