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Finding the Fourth Proportional to 720,236,401.70, 1,011,051,940.30 and 720,236,401.70

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Solution

The fourth proportional to 720,236,401.70, 1,011,051,940.30 and 720,236,401.70 is: 1,011,051,940.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,236,401.70 : 1,011,051,940.30 = 720,236,401.70 : x
  2. Step 2: Convert to fraction form
    720,236,401.70/1,011,051,940.30 = 720,236,401.70/x
  3. Step 3: Cross multiply
    720,236,401.70x = 1,011,051,940.30 × 720,236,401.70
  4. Step 4: Simplify right side
    720,236,401.70x = 728,196,411,413,475,200
  5. Step 5: Solve for x
    x = 728,196,411,413,475,200/720,236,401.70
  6. Step 6: Final answer
    x = 1,011,051,940.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.