Home / 647,035,011.20-970,552,516.80-429,356,777.60

Finding the Fourth Proportional to 647,035,011.20, 970,552,516.80 and 429,356,777.60

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Solution

The fourth proportional to 647,035,011.20, 970,552,516.80 and 429,356,777.60 is: 644,035,166.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,035,011.20 : 970,552,516.80 = 429,356,777.60 : x
  2. Step 2: Convert to fraction form
    647,035,011.20/970,552,516.80 = 429,356,777.60/x
  3. Step 3: Cross multiply
    647,035,011.20x = 970,552,516.80 × 429,356,777.60
  4. Step 4: Simplify right side
    647,035,011.20x = 416,713,301,104,817,856
  5. Step 5: Solve for x
    x = 416,713,301,104,817,856/647,035,011.20
  6. Step 6: Final answer
    x = 644,035,166.40

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1.5x scale

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.