Home / 918,583,857.40-1,377,875,786.10-660,303,531.40

Finding the Fourth Proportional to 918,583,857.40, 1,377,875,786.10 and 660,303,531.40

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Solution

The fourth proportional to 918,583,857.40, 1,377,875,786.10 and 660,303,531.40 is: 990,455,297.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,583,857.40 : 1,377,875,786.10 = 660,303,531.40 : x
  2. Step 2: Convert to fraction form
    918,583,857.40/1,377,875,786.10 = 660,303,531.40/x
  3. Step 3: Cross multiply
    918,583,857.40x = 1,377,875,786.10 × 660,303,531.40
  4. Step 4: Simplify right side
    918,583,857.40x = 909,816,247,392,380,928
  5. Step 5: Solve for x
    x = 909,816,247,392,380,928/918,583,857.40
  6. Step 6: Final answer
    x = 990,455,297.10

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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.