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Finding the Fourth Proportional to 663,806,934.40, 995,710,401.60 and 357,696,918.40

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Solution

The fourth proportional to 663,806,934.40, 995,710,401.60 and 357,696,918.40 is: 536,545,377.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,806,934.40 : 995,710,401.60 = 357,696,918.40 : x
  2. Step 2: Convert to fraction form
    663,806,934.40/995,710,401.60 = 357,696,918.40/x
  3. Step 3: Cross multiply
    663,806,934.40x = 995,710,401.60 × 357,696,918.40
  4. Step 4: Simplify right side
    663,806,934.40x = 356,162,542,271,146,432
  5. Step 5: Solve for x
    x = 356,162,542,271,146,432/663,806,934.40
  6. Step 6: Final answer
    x = 536,545,377.60

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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.