Home / 690,406,646.72-1,035,602,882.96-399,088,405.22

Finding the Fourth Proportional to 690,406,646.72, 1,035,602,882.96 and 399,088,405.22

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Solution

The fourth proportional to 690,406,646.72, 1,035,602,882.96 and 399,088,405.22 is: 598,628,511.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,406,646.72 : 1,035,602,882.96 = 399,088,405.22 : x
  2. Step 2: Convert to fraction form
    690,406,646.72/1,035,602,882.96 = 399,088,405.22/x
  3. Step 3: Cross multiply
    690,406,646.72x = 1,035,602,882.96 × 399,088,405.22
  4. Step 4: Simplify right side
    690,406,646.72x = 413,297,103,001,740,736
  5. Step 5: Solve for x
    x = 413,297,103,001,740,736/690,406,646.72
  6. Step 6: Final answer
    x = 598,628,511.13

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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.