Home / 970,009,619.40-1,455,014,429.10-279,939,385.80

Finding the Fourth Proportional to 970,009,619.40, 1,455,014,429.10 and 279,939,385.80

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Solution

The fourth proportional to 970,009,619.40, 1,455,014,429.10 and 279,939,385.80 is: 419,909,078.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    970,009,619.40 : 1,455,014,429.10 = 279,939,385.80 : x
  2. Step 2: Convert to fraction form
    970,009,619.40/1,455,014,429.10 = 279,939,385.80/x
  3. Step 3: Cross multiply
    970,009,619.40x = 1,455,014,429.10 × 279,939,385.80
  4. Step 4: Simplify right side
    970,009,619.40x = 407,315,845,612,391,616
  5. Step 5: Solve for x
    x = 407,315,845,612,391,616/970,009,619.40
  6. Step 6: Final answer
    x = 419,909,078.70

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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.