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Finding the Fourth Proportional to 1,259,602,401.60, 1,889,403,602.40 and 708,604,372.80

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Solution

The fourth proportional to 1,259,602,401.60, 1,889,403,602.40 and 708,604,372.80 is: 1,062,906,559.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,602,401.60 : 1,889,403,602.40 = 708,604,372.80 : x
  2. Step 2: Convert to fraction form
    1,259,602,401.60/1,889,403,602.40 = 708,604,372.80/x
  3. Step 3: Cross multiply
    1,259,602,401.60x = 1,889,403,602.40 × 708,604,372.80
  4. Step 4: Simplify right side
    1,259,602,401.60x = 1,338,839,654,644,712,448
  5. Step 5: Solve for x
    x = 1,338,839,654,644,712,448/1,259,602,401.60
  6. Step 6: Final answer
    x = 1,062,906,559.20

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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.