Home / 1,287,586,574.80-1,931,379,862.20-469,725,557.20

Finding the Fourth Proportional to 1,287,586,574.80, 1,931,379,862.20 and 469,725,557.20

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Solution

The fourth proportional to 1,287,586,574.80, 1,931,379,862.20 and 469,725,557.20 is: 704,588,335.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,586,574.80 : 1,931,379,862.20 = 469,725,557.20 : x
  2. Step 2: Convert to fraction form
    1,287,586,574.80/1,931,379,862.20 = 469,725,557.20/x
  3. Step 3: Cross multiply
    1,287,586,574.80x = 1,931,379,862.20 × 469,725,557.20
  4. Step 4: Simplify right side
    1,287,586,574.80x = 907,218,481,936,754,176
  5. Step 5: Solve for x
    x = 907,218,481,936,754,176/1,287,586,574.80
  6. Step 6: Final answer
    x = 704,588,335.80

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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.