Home / 915,411,668.98-1,263,259,191.80-497,723,954.26

Finding the Fourth Proportional to 915,411,668.98, 1,263,259,191.80 and 497,723,954.26

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Solution

The fourth proportional to 915,411,668.98, 1,263,259,191.80 and 497,723,954.26 is: 686,854,211.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,411,668.98 : 1,263,259,191.80 = 497,723,954.26 : x
  2. Step 2: Convert to fraction form
    915,411,668.98/1,263,259,191.80 = 497,723,954.26/x
  3. Step 3: Cross multiply
    915,411,668.98x = 1,263,259,191.80 × 497,723,954.26
  4. Step 4: Simplify right side
    915,411,668.98x = 628,754,360,197,987,712
  5. Step 5: Solve for x
    x = 628,754,360,197,987,712/915,411,668.98
  6. Step 6: Final answer
    x = 686,854,211.61

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1.5x scale

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.