Home / 915,007,212.51-1,262,722,741.16-497,319,372.51

Finding the Fourth Proportional to 915,007,212.51, 1,262,722,741.16 and 497,319,372.51

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Solution

The fourth proportional to 915,007,212.51, 1,262,722,741.16 and 497,319,372.51 is: 686,307,684.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,007,212.51 : 1,262,722,741.16 = 497,319,372.51 : x
  2. Step 2: Convert to fraction form
    915,007,212.51/1,262,722,741.16 = 497,319,372.51/x
  3. Step 3: Cross multiply
    915,007,212.51x = 1,262,722,741.16 × 497,319,372.51
  4. Step 4: Simplify right side
    915,007,212.51x = 627,976,481,285,311,744
  5. Step 5: Solve for x
    x = 627,976,481,285,311,744/915,007,212.51
  6. Step 6: Final answer
    x = 686,307,684.46

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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.