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Finding the Fourth Proportional to 1,242,922,509.76, 1,715,878,693.56 and 908,019,020.38

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Solution

The fourth proportional to 1,242,922,509.76, 1,715,878,693.56 and 908,019,020.38 is: 1,253,537,914.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,922,509.76 : 1,715,878,693.56 = 908,019,020.38 : x
  2. Step 2: Convert to fraction form
    1,242,922,509.76/1,715,878,693.56 = 908,019,020.38/x
  3. Step 3: Cross multiply
    1,242,922,509.76x = 1,715,878,693.56 × 908,019,020.38
  4. Step 4: Simplify right side
    1,242,922,509.76x = 1,558,050,490,417,265,408
  5. Step 5: Solve for x
    x = 1,558,050,490,417,265,408/1,242,922,509.76
  6. Step 6: Final answer
    x = 1,253,537,914.22

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Double scale
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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.