Home / 862,285,673.40-1,293,428,510.10-309,852,753.90

Finding the Fourth Proportional to 862,285,673.40, 1,293,428,510.10 and 309,852,753.90

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Solution

The fourth proportional to 862,285,673.40, 1,293,428,510.10 and 309,852,753.90 is: 464,779,130.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,285,673.40 : 1,293,428,510.10 = 309,852,753.90 : x
  2. Step 2: Convert to fraction form
    862,285,673.40/1,293,428,510.10 = 309,852,753.90/x
  3. Step 3: Cross multiply
    862,285,673.40x = 1,293,428,510.10 × 309,852,753.90
  4. Step 4: Simplify right side
    862,285,673.40x = 400,772,385,827,258,880
  5. Step 5: Solve for x
    x = 400,772,385,827,258,880/862,285,673.40
  6. Step 6: Final answer
    x = 464,779,130.85

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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.