Home / 1,638,687,305.40-2,456,974,123.86-642,808,960.24

Finding the Fourth Proportional to 1,638,687,305.40, 2,456,974,123.86 and 642,808,960.24

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Solution

The fourth proportional to 1,638,687,305.40, 2,456,974,123.86 and 642,808,960.24 is: 963,798,875.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638,687,305.40 : 2,456,974,123.86 = 642,808,960.24 : x
  2. Step 2: Convert to fraction form
    1,638,687,305.40/2,456,974,123.86 = 642,808,960.24/x
  3. Step 3: Cross multiply
    1,638,687,305.40x = 2,456,974,123.86 × 642,808,960.24
  4. Step 4: Simplify right side
    1,638,687,305.40x = 1,579,364,981,888,889,088
  5. Step 5: Solve for x
    x = 1,579,364,981,888,889,088/1,638,687,305.40
  6. Step 6: Final answer
    x = 963,798,875.29

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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.