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Finding the Fourth Proportional to 559,879,639.80, 839,819,459.70 and 329,730,257.40

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Solution

The fourth proportional to 559,879,639.80, 839,819,459.70 and 329,730,257.40 is: 494,595,386.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,879,639.80 : 839,819,459.70 = 329,730,257.40 : x
  2. Step 2: Convert to fraction form
    559,879,639.80/839,819,459.70 = 329,730,257.40/x
  3. Step 3: Cross multiply
    559,879,639.80x = 839,819,459.70 × 329,730,257.40
  4. Step 4: Simplify right side
    559,879,639.80x = 276,913,886,616,409,920
  5. Step 5: Solve for x
    x = 276,913,886,616,409,920/559,879,639.80
  6. Step 6: Final answer
    x = 494,595,386.10

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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.