Home / 919,220,066.40-1,378,956,070.80-305,740,322.40

Finding the Fourth Proportional to 919,220,066.40, 1,378,956,070.80 and 305,740,322.40

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Solution

The fourth proportional to 919,220,066.40, 1,378,956,070.80 and 305,740,322.40 is: 458,652,382.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,220,066.40 : 1,378,956,070.80 = 305,740,322.40 : x
  2. Step 2: Convert to fraction form
    919,220,066.40/1,378,956,070.80 = 305,740,322.40/x
  3. Step 3: Cross multiply
    919,220,066.40x = 1,378,956,070.80 × 305,740,322.40
  4. Step 4: Simplify right side
    919,220,066.40x = 421,602,473,661,829,184
  5. Step 5: Solve for x
    x = 421,602,473,661,829,184/919,220,066.40
  6. Step 6: Final answer
    x = 458,652,382.68

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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.