Home / 915,411,667.98-1,263,259,190.42-497,723,953.26

Finding the Fourth Proportional to 915,411,667.98, 1,263,259,190.42 and 497,723,953.26

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Solution

The fourth proportional to 915,411,667.98, 1,263,259,190.42 and 497,723,953.26 is: 686,854,210.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,411,667.98 : 1,263,259,190.42 = 497,723,953.26 : x
  2. Step 2: Convert to fraction form
    915,411,667.98/1,263,259,190.42 = 497,723,953.26/x
  3. Step 3: Cross multiply
    915,411,667.98x = 1,263,259,190.42 × 497,723,953.26
  4. Step 4: Simplify right side
    915,411,667.98x = 628,754,358,247,869,568
  5. Step 5: Solve for x
    x = 628,754,358,247,869,568/915,411,667.98
  6. Step 6: Final answer
    x = 686,854,210.23

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Double scale
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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.