Home / 1,078,966,915.20-1,618,450,372.80-806,869,123.20

Finding the Fourth Proportional to 1,078,966,915.20, 1,618,450,372.80 and 806,869,123.20

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Solution

The fourth proportional to 1,078,966,915.20, 1,618,450,372.80 and 806,869,123.20 is: 1,210,303,684.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,966,915.20 : 1,618,450,372.80 = 806,869,123.20 : x
  2. Step 2: Convert to fraction form
    1,078,966,915.20/1,618,450,372.80 = 806,869,123.20/x
  3. Step 3: Cross multiply
    1,078,966,915.20x = 1,618,450,372.80 × 806,869,123.20
  4. Step 4: Simplify right side
    1,078,966,915.20x = 1,305,877,633,243,849,216
  5. Step 5: Solve for x
    x = 1,305,877,633,243,849,216/1,078,966,915.20
  6. Step 6: Final answer
    x = 1,210,303,684.80

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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.