Home / 840,501,419.93-1,261,517,192.69-447,358,307.81

Finding the Fourth Proportional to 840,501,419.93, 1,261,517,192.69 and 447,358,307.81

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Solution

The fourth proportional to 840,501,419.93, 1,261,517,192.69 and 447,358,307.81 is: 671,444,667.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,501,419.93 : 1,261,517,192.69 = 447,358,307.81 : x
  2. Step 2: Convert to fraction form
    840,501,419.93/1,261,517,192.69 = 447,358,307.81/x
  3. Step 3: Cross multiply
    840,501,419.93x = 1,261,517,192.69 × 447,358,307.81
  4. Step 4: Simplify right side
    840,501,419.93x = 564,350,196,599,292,352
  5. Step 5: Solve for x
    x = 564,350,196,599,292,352/840,501,419.93
  6. Step 6: Final answer
    x = 671,444,667.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.