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Finding the Fourth Proportional to 898,689,969.60, 1,348,034,954.40 and 438,391,204.80

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Solution

The fourth proportional to 898,689,969.60, 1,348,034,954.40 and 438,391,204.80 is: 657,586,807.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,689,969.60 : 1,348,034,954.40 = 438,391,204.80 : x
  2. Step 2: Convert to fraction form
    898,689,969.60/1,348,034,954.40 = 438,391,204.80/x
  3. Step 3: Cross multiply
    898,689,969.60x = 1,348,034,954.40 × 438,391,204.80
  4. Step 4: Simplify right side
    898,689,969.60x = 590,966,667,771,929,088
  5. Step 5: Solve for x
    x = 590,966,667,771,929,088/898,689,969.60
  6. Step 6: Final answer
    x = 657,586,807.20

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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.