Home / 666,513,513.71-920,406,921.81-498,958,884.34

Finding the Fourth Proportional to 666,513,513.71, 920,406,921.81 and 498,958,884.34

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Solution

The fourth proportional to 666,513,513.71, 920,406,921.81 and 498,958,884.34 is: 689,026,105.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,513,513.71 : 920,406,921.81 = 498,958,884.34 : x
  2. Step 2: Convert to fraction form
    666,513,513.71/920,406,921.81 = 498,958,884.34/x
  3. Step 3: Cross multiply
    666,513,513.71x = 920,406,921.81 × 498,958,884.34
  4. Step 4: Simplify right side
    666,513,513.71x = 459,245,210,840,959,040
  5. Step 5: Solve for x
    x = 459,245,210,840,959,040/666,513,513.71
  6. Step 6: Final answer
    x = 689,026,105.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.