Home / 921,559,444.56-1,271,752,147.80-503,872,019.28

Finding the Fourth Proportional to 921,559,444.56, 1,271,752,147.80 and 503,872,019.28

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Solution

The fourth proportional to 921,559,444.56, 1,271,752,147.80 and 503,872,019.28 is: 695,343,449.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,559,444.56 : 1,271,752,147.80 = 503,872,019.28 : x
  2. Step 2: Convert to fraction form
    921,559,444.56/1,271,752,147.80 = 503,872,019.28/x
  3. Step 3: Cross multiply
    921,559,444.56x = 1,271,752,147.80 × 503,872,019.28
  4. Step 4: Simplify right side
    921,559,444.56x = 640,800,322,735,662,976
  5. Step 5: Solve for x
    x = 640,800,322,735,662,976/921,559,444.56
  6. Step 6: Final answer
    x = 695,343,449.11

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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.