Home / 970,009,617.90-1,455,014,426.85-279,939,384.30

Finding the Fourth Proportional to 970,009,617.90, 1,455,014,426.85 and 279,939,384.30

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Solution

The fourth proportional to 970,009,617.90, 1,455,014,426.85 and 279,939,384.30 is: 419,909,076.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    970,009,617.90 : 1,455,014,426.85 = 279,939,384.30 : x
  2. Step 2: Convert to fraction form
    970,009,617.90/1,455,014,426.85 = 279,939,384.30/x
  3. Step 3: Cross multiply
    970,009,617.90x = 1,455,014,426.85 × 279,939,384.30
  4. Step 4: Simplify right side
    970,009,617.90x = 407,315,842,800,006,400
  5. Step 5: Solve for x
    x = 407,315,842,800,006,400/970,009,617.90
  6. Step 6: Final answer
    x = 419,909,076.45

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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.