Home / 690,971,767.79-953,308,215.05-393,403,466.66

Finding the Fourth Proportional to 690,971,767.79, 953,308,215.05 and 393,403,466.66

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Solution

The fourth proportional to 690,971,767.79, 953,308,215.05 and 393,403,466.66 is: 542,764,225.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,971,767.79 : 953,308,215.05 = 393,403,466.66 : x
  2. Step 2: Convert to fraction form
    690,971,767.79/953,308,215.05 = 393,403,466.66/x
  3. Step 3: Cross multiply
    690,971,767.79x = 953,308,215.05 × 393,403,466.66
  4. Step 4: Simplify right side
    690,971,767.79x = 375,034,756,589,393,152
  5. Step 5: Solve for x
    x = 375,034,756,589,393,152/690,971,767.79
  6. Step 6: Final answer
    x = 542,764,225.80

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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.