Home / 918,209,810.60-1,377,683,816.70-372,994,015.40

Finding the Fourth Proportional to 918,209,810.60, 1,377,683,816.70 and 372,994,015.40

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Solution

The fourth proportional to 918,209,810.60, 1,377,683,816.70 and 372,994,015.40 is: 559,640,958.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,209,810.60 : 1,377,683,816.70 = 372,994,015.40 : x
  2. Step 2: Convert to fraction form
    918,209,810.60/1,377,683,816.70 = 372,994,015.40/x
  3. Step 3: Cross multiply
    918,209,810.60x = 1,377,683,816.70 × 372,994,015.40
  4. Step 4: Simplify right side
    918,209,810.60x = 513,867,818,742,530,560
  5. Step 5: Solve for x
    x = 513,867,818,742,530,560/918,209,810.60
  6. Step 6: Final answer
    x = 559,640,958.76

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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.