Home / 1,287,446,026.48-1,776,554,081.40-722,820,632.55

Finding the Fourth Proportional to 1,287,446,026.48, 1,776,554,081.40 and 722,820,632.55

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Solution

The fourth proportional to 1,287,446,026.48, 1,776,554,081.40 and 722,820,632.55 is: 997,424,294.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,446,026.48 : 1,776,554,081.40 = 722,820,632.55 : x
  2. Step 2: Convert to fraction form
    1,287,446,026.48/1,776,554,081.40 = 722,820,632.55/x
  3. Step 3: Cross multiply
    1,287,446,026.48x = 1,776,554,081.40 × 722,820,632.55
  4. Step 4: Simplify right side
    1,287,446,026.48x = 1,284,129,944,880,732,160
  5. Step 5: Solve for x
    x = 1,284,129,944,880,732,160/1,287,446,026.48
  6. Step 6: Final answer
    x = 997,424,294.67

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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.