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Finding the Fourth Proportional to 1,211,718,752.40, 1,813,043,165.40 and 803,572,064.40

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Solution

The fourth proportional to 1,211,718,752.40, 1,813,043,165.40 and 803,572,064.40 is: 1,202,350,658.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,718,752.40 : 1,813,043,165.40 = 803,572,064.40 : x
  2. Step 2: Convert to fraction form
    1,211,718,752.40/1,813,043,165.40 = 803,572,064.40/x
  3. Step 3: Cross multiply
    1,211,718,752.40x = 1,813,043,165.40 × 803,572,064.40
  4. Step 4: Simplify right side
    1,211,718,752.40x = 1,456,910,839,266,788,608
  5. Step 5: Solve for x
    x = 1,456,910,839,266,788,608/1,211,718,752.40
  6. Step 6: Final answer
    x = 1,202,350,658.01

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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.